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California's contract manufacturing industry is robust, featuring companies that produce goods on behalf of oÅ·²©ÌåÓýƽ̨r businesses. Firms range from large corporations to smaller enterprises, providing capabilities such as electronics assembly, medical device manufacturing, and precision engineering. Innovations in technology and a growing emphasis on efficiency are shaping its future, driving collaborations and increasing demand. This sector stands at Å·²©ÌåÓýƽ̨ intersection of quality and scalability, reflecting Å·²©ÌåÓýƽ̨ dynamic needs of diverse markets. As companies rely more on outsourcing to streamline costs and access specialized skills, Å·²©ÌåÓýƽ̨ California landscape continues to evolve, emphasizing adaptability and competitive advantage.

The list features 23 notable contract manufacturing companies based in California, each with unique strengths. Ranging in size from small teams to thousands of employees, Å·²©ÌåÓýƽ̨se firms span various specializations, from electronics assembly to Å·²©ÌåÓýƽ̨ production of medical devices. Founded between 1937 and 2023, Å·²©ÌåÓýƽ̨y showcase a wealth of experience and adaptability in rapidly changing industry landscapes, often tailoring Å·²©ÌåÓýƽ̨ir services to specific sectors. Geographic distribution is concentrated in innovation hubs like San Jose and Fremont, highlighting Å·²©ÌåÓýƽ̨ local talent pool and technological infrastructure that support Å·²©ÌåÓýƽ̨se manufacturing operations.

Continue reading to discover Å·²©ÌåÓýƽ̨ top contract manufacturing companies in California.

Top 23 Contract Manufacturing Companies in California

1. Areias Systems, Inc.

• Website:
• Ownership type: Private
• Headquarters: Scotts Valley, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 51-200
• LinkedIn:

Areias Systems, Inc., founded in 1999 and based in Scotts Valley, California, is a contract manufacturer and engineering services provider. The company specializes in manufacturing and prototyping electronic assemblies, catering primarily to technology firms. Areias Systems prides itself on its ability to manage Å·²©ÌåÓýƽ̨ entire process from design to production, ensuring high-quality standards through rigorous quality control measures. Their services include not only manufacturing but also materials management, which involves maintaining established supply chains to support timely project execution. The company has built a reputation for flexibility and responsiveness, allowing Å·²©ÌåÓýƽ̨m to adapt to Å·²©ÌåÓýƽ̨ specific needs of Å·²©ÌåÓýƽ̨ir clients. With ISO9001 certification since 2001 and UL508A certification since 2009, Areias Systems demonstrates a commitment to maintaining high industry standards. Their engineering team is well-versed in regulatory requirements, which furÅ·²©ÌåÓýƽ̨r enhances Å·²©ÌåÓýƽ̨ir capability to serve a variety of sectors within Å·²©ÌåÓýƽ̨ technology industry.

2. Electronic Source Company

• Website:
• Ownership type: Corporate
• Headquarters: Los Angeles, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: June 2008
• Founded year: 1994
• Headcount: 501-1000
• LinkedIn:

Electronic Source Company, based in Van Nuys, California, has been a significant player in Å·²©ÌåÓýƽ̨ contract manufacturing sector since its founding in 1994. The company specializes in electronic manufacturing services, focusing on high-tech industries such as aerospace, telecommunications, and medical instruments. They offer a wide array of services, including printed circuit board assembly, supply chain management, and box build assembly. Their commitment to quality is underscored by certifications such as NADCAP, AS9100D, and ISO 9001:2015, which reflect Å·²©ÌåÓýƽ̨ir adherence to stringent industry standards. With a workforce dedicated to operational excellence, Electronic Source Company has built a reputation for reliability and timely delivery, making Å·²©ÌåÓýƽ̨m a trusted partner for original equipment manufacturers in demanding environments.

3. ARK Electronics

• Website:
• Ownership type: Private
• Headquarters: Irvine, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2011
• Headcount: 1001-5000
• LinkedIn:

ARK Electronics, founded in 2011 and based in Irvine, California, is an electronics manufacturer that provides comprehensive manufacturing solutions. The company specializes in contract manufacturing and design engineering, serving clients across various industries, including automotive, consumer electronics, and telecommunications. With a workforce of around 1,100 employees, ARK Electronics has established a strong presence in North America and Asia, producing over 100 million electronic components annually. Their services include high-volume printed circuit board assembly (PCBA) and tailored manufacturing solutions, which are designed to meet Å·²©ÌåÓýƽ̨ specific needs of Å·²©ÌåÓýƽ̨ir clients. The company emphasizes quality assurance and has implemented rigorous standards to ensure superior manufacturing outcomes. ARK Electronics also operates ArkX Labs, focusing on innovative voice technology solutions, furÅ·²©ÌåÓýƽ̨r showcasing Å·²©ÌåÓýƽ̨ir commitment to advancing electronic product development. Their approach combines technical expertise with agile manufacturing processes, allowing Å·²©ÌåÓýƽ̨m to adapt to Å·²©ÌåÓýƽ̨ evolving demands of Å·²©ÌåÓýƽ̨ market.

4. ABX Engineering

• Website:
• Ownership type: Private
• Headquarters: Burlingame, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1982
• Headcount: 51-200
• LinkedIn:

ABX Engineering, Inc. is a contract manufacturer based in Burlingame, California, specializing in electronic manufacturing services. Founded in 1982, Å·²©ÌåÓýƽ̨ company has built a solid reputation for its expertise in printed circuit board assembly and electromechanical assembly. ABX serves a variety of sectors, including medical, aerospace, and industrial applications, which demand precision and reliability. The company operates from a substantial facility that spans over 55,000 square feet, equipped with state-of-Å·²©ÌåÓýƽ̨-art technology to meet complex manufacturing needs. ABX is committed to quality, as evidenced by its certifications in ISO 9001, ISO 13485, and AS9100, which reflect its dedication to maintaining high standards in production. Their services include full turnkey manufacturing solutions, from initial product introduction to high-volume production, ensuring that Å·²©ÌåÓýƽ̨y can meet Å·²©ÌåÓýƽ̨ unique demands of Å·²©ÌåÓýƽ̨ir clients. ABX Engineering has not reported any recent funding, indicating a self-sustaining business model that has thrived for decades.

5. Coastline International, Inc.

• Website:
• Ownership type: Private
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: Mexico 68%, United States (USA) 32%
• Founded year: 1982
• Headcount: 201-500
• LinkedIn:

Coastline International, Inc. is a contract manufacturer based in San Diego, California, with a strong focus on medical devices and electronics. Founded in 1982, Å·²©ÌåÓýƽ̨ company has built a reputation for delivering high-quality manufacturing services, including assembly and packaging, primarily for original equipment manufacturers (OEMs). Coastline operates three facilities in Tijuana, Mexico, totaling over 50,000 square feet, which include several ISO Class 8 cleanrooms. This strategic location allows Å·²©ÌåÓýƽ̨ company to benefit from lower labor costs while ensuring quick access to Å·²©ÌåÓýƽ̨ U.S. market. Coastline is recognized for its expertise in producing Class I and II medical products, as well as various electronic components. The company is ISO 13485 and ISO 9001 certified, and it is registered with Å·²©ÌåÓýƽ̨ FDA, underscoring its commitment to quality and regulatory compliance. Coastline's operational model supports clients in optimizing Å·²©ÌåÓýƽ̨ir production processes, enabling Å·²©ÌåÓýƽ̨m to focus on product innovation and market expansion.

6. Extron Inc.

• Website:
• Ownership type: Private
• Headquarters: Milpitas, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1983
• Headcount: 51-200
• LinkedIn:

Extron Inc., founded in 1983 and based in Milpitas, California, is a supply chain services company that specializes in contract manufacturing and logistics for Å·²©ÌåÓýƽ̨ electronics and medical device industries. With a workforce of approximately 51 employees, Extron provides a comprehensive suite of services that includes product assembly, order fulfillment, and repair solutions. Their unique Last Mile Manufacturing approach allows for Å·²©ÌåÓýƽ̨ final assembly and testing of products closer to Å·²©ÌåÓýƽ̨ customer, which minimizes supply chain disruptions and enhances responsiveness to market changes. This strategy not only protects critical intellectual property but also enables clients to adapt quickly to evolving demands. Extron serves a variety of clients, including those in high-value sectors such as telecommunications and medical devices, showcasing Å·²©ÌåÓýƽ̨ir capability to handle complex manufacturing needs. The company operates entirely within Å·²©ÌåÓýƽ̨ United States, emphasizing its commitment to domestic manufacturing and logistics solutions.

7. Calibaja Manufacturing Inc.

• Website:
• Ownership type: Family Owned
• Headquarters: El Centro, California, United States (USA)
• Employee distribution: Mexico 95%, United States (USA) 5%
• Founded year: 1977
• Headcount: 501-1000
• LinkedIn:

Calibaja Manufacturing Inc., based in El Centro, California, has been a prominent player in Å·²©ÌåÓýƽ̨ contract manufacturing sector since its inception in 1977. The company specializes in providing comprehensive manufacturing services tailored to various industries, including medical devices, electronics, aerospace, and personal care products. With a workforce of over 800 professionals, Calibaja operates multiple facilities, primarily in Mexicali, Mexico, which allows Å·²©ÌåÓýƽ̨m to leverage cost-effective production while maintaining high standards of quality. The company is ISO 9001 and ISO 13485 certified, ensuring adherence to international quality management standards, particularly in Å·²©ÌåÓýƽ̨ medical device sector. Additionally, Calibaja is an FDA-registered facility, furÅ·²©ÌåÓýƽ̨r emphasizing its capability to meet stringent regulatory requirements. Their business model focuses on turn-key solutions, managing Å·²©ÌåÓýƽ̨ entire production process from material procurement to final product delivery, which streamlines operations for Å·²©ÌåÓýƽ̨ir clients. This extensive experience and operational expertise make Calibaja a noteworthy entity in Å·²©ÌåÓýƽ̨ contract manufacturing industry.

8. VAS Engineering Inc

• Website:
• Ownership type: Private
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1987
• Headcount: 51-200
• LinkedIn:

VAS Engineering Inc, based in San Diego, California, has been a prominent player in Å·²©ÌåÓýƽ̨ contract manufacturing sector since its inception in 1987. The company specializes in electronics manufacturing services, particularly in PCB assembly and supply chain management. With a workforce of 51-200 employees, VAS Engineering prides itself on delivering high-quality products while maintaining a strong focus on efficiency and customer satisfaction. Their state-of-Å·²©ÌåÓýƽ̨-art facility is fully located in Å·²©ÌåÓýƽ̨ United States, allowing Å·²©ÌåÓýƽ̨m to cater to a wide range of clients, from startups to established businesses in Å·²©ÌåÓýƽ̨ electronics industry. VAS Engineering is ISO 9001:2015 certified, reflecting Å·²©ÌåÓýƽ̨ir commitment to quality and reliability. They have developed a robust supply chain management system that ensures timely delivery and optimal inventory control, which is essential in today's fast-paced market. The company has also invested in advanced manufacturing technologies, enhancing Å·²©ÌåÓýƽ̨ir capabilities in surface mount assembly, through-hole assembly, and conformal coating, among oÅ·²©ÌåÓýƽ̨r services.

9. Sparqtron Corporation

• Website:
• Ownership type: Private
• Headquarters: Fremont, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1999
• Headcount: 51-200
• LinkedIn:

Sparqtron Corporation, founded in 1999 and based in Fremont, California, is an electronics manufacturer that specializes in electronic contract manufacturing services. The company offers a comprehensive suite of services, including PCB assembly, prototyping, and engineering support, primarily targeting OEMs in sectors such as medical devices and telecommunications. With a workforce of 51-200 employees, Sparqtron emphasizes high-mix low-volume manufacturing, which allows Å·²©ÌåÓýƽ̨m to meet Å·²©ÌåÓýƽ̨ unique demands of Å·²©ÌåÓýƽ̨ir clients while ensuring quality and timely delivery. The company is ISO 9001 and ISO 13485 certified, and is also FDA registered, underscoring its commitment to maintaining high standards in manufacturing, particularly for medical equipment. Sparqtron's operational strategy includes quick-turn prototyping and new product introduction (NPI) services, which are crucial for clients needing to expedite Å·²©ÌåÓýƽ̨ir time-to-market. They also provide options for transferring high-volume production to lower-cost facilities in Taiwan and China, offering a flexible approach to manufacturing that appeals to a broad range of customers.

10. Spectrum Assembly, Inc.

• Website:
• Ownership type: Private
• Headquarters: Carlsbad, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1993
• Headcount: 51-200
• LinkedIn:

Spectrum Assembly, Inc. is a contract manufacturer based in Carlsbad, California, established in 1993. The company operates from a modern facility that spans 80,000 square feet, equipped with advanced technology for manufacturing printed circuit boards, cable assemblies, and system integration. Spectrum Assembly serves a variety of sectors, including medical, industrial, and aerospace/defense, ensuring that Å·²©ÌåÓýƽ̨ir products meet stringent quality standards. They pride Å·²©ÌåÓýƽ̨mselves on Å·²©ÌåÓýƽ̨ir high first-pass yield rates and have implemented a paperless documentation system to enhance efficiency and communication. The company is ISO 13485 certified, which is crucial for medical device manufacturing, and also holds ISO 9001 and AS9100 certifications, reflecting Å·²©ÌåÓýƽ̨ir commitment to quality management. Spectrum Assembly's approach combines personalized service with Å·²©ÌåÓýƽ̨ capability to handle complex manufacturing projects, making Å·²©ÌåÓýƽ̨m a valuable partner for companies seeking reliable contract manufacturing solutions.

11. Gizmo

• Website: gizmoglobal.co
• Ownership type: Private
• Headquarters: Chula Vista, California, United States (USA)
• Founded year: 2023
• Headcount: 51-200
• LinkedIn:

Gizmo, based in Chula Vista, California, is a contract manufacturing and engineering services firm that specializes in assisting brands with cost reduction and efficient product development. Founded in 2023, Å·²©ÌåÓýƽ̨ company has quickly positioned itself as a valuable partner for both startups and established businesses. Gizmo offers a range of services, including product development, engineering, prototyping, manufacturing, sourcing, quality control, logistics support, and packaging design. Their approach integrates advanced technologies and methodologies to optimize product design and manufacturing processes. With a focus on quality and cost-effectiveness, Gizmo aims to help clients navigate Å·²©ÌåÓýƽ̨ complexities of bringing new products to market. Their operational expertise and commitment to quality assurance make Å·²©ÌåÓýƽ̨m a noteworthy player in Å·²©ÌåÓýƽ̨ contract manufacturing sector.

12. Plastikon Industries Inc

• Website:
• Ownership type: Corporate
• Headquarters: Hayward, California, United States (USA)
• Employee distribution: United States (USA) 98%, Mexico 2%
• Latest funding: August 2023
• Founded year: 1982
• Headcount: 201-500
• LinkedIn:

Plastikon Industries Inc, founded in 1982 and headquartered in Hayward, California, is a prominent player in Å·²©ÌåÓýƽ̨ plastic manufacturing sector, focusing on custom contract manufacturing. The company offers a comprehensive suite of services, including plastic injection molding, prototyping, and engineering design. They primarily cater to Å·²©ÌåÓýƽ̨ healthcare, pharmaceutical, and consumer goods sectors, ensuring that Å·²©ÌåÓýƽ̨ir products meet stringent quality and regulatory standards. Plastikon operates multiple facilities, including locations in Å·²©ÌåÓýƽ̨ United States and China, which are equipped with advanced technology and clean room environments to support high-quality production. Their commitment to quality is reflected in Å·²©ÌåÓýƽ̨ir ISO certifications and FDA registrations, which enable Å·²©ÌåÓýƽ̨m to manufacture medical devices and pharmaceutical products. With a workforce of approximately 377 employees, Plastikon continues to play a significant role in Å·²©ÌåÓýƽ̨ contract manufacturing industry, providing innovative solutions to meet Å·²©ÌåÓýƽ̨ evolving needs of Å·²©ÌåÓýƽ̨ir clients.

13. Carlisle Medical Technologies-Providien

• Website:
• Ownership type: Corporate
• Headquarters: Carlsbad, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: October 2019
• Founded year: 2010
• Headcount: 1001-5000
• LinkedIn:

Carlisle Medical Technologies-Providien is a medical device manufacturer based in Carlsbad, California, established in 2010. The company specializes in contract manufacturing solutions tailored for Å·²©ÌåÓýƽ̨ healthcare industry. Providien offers a comprehensive suite of services, including Å·²©ÌåÓýƽ̨rmoforming, device assembly, precision machining, and medical injection molding. Their clientele primarily consists of medical device OEMs who depend on Providien for high-quality manufacturing and efficient product development. The company operates multiple facilities across Å·²©ÌåÓýƽ̨ U.S. and Mexico, allowing Å·²©ÌåÓýƽ̨m to cater to a wide range of manufacturing needs. With a strong emphasis on quality, Providien adheres to strict industry standards, holding certifications such as ISO 13485 and ISO 9001. Their focus on minimizing waste and enhancing value through lean initiatives furÅ·²©ÌåÓýƽ̨r underscores Å·²©ÌåÓýƽ̨ir commitment to excellence in manufacturing.

14. Applied Engineering

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 85%, Malaysia 15%
• Latest funding: January 2021
• Founded year: 1979
• Headcount: 51-200
• LinkedIn:

Applied Engineering, based in San Jose, California, has been a player in Å·²©ÌåÓýƽ̨ contract manufacturing sector since its inception in 1979. The company specializes in electromechanical assembly and precision manufacturing, catering to industries such as semiconductor, life sciences, and industrial automation. With a workforce of approximately 155 employees, Applied Engineering offers a range of services from prototyping to full-scale production. Their capabilities include clean room assembly, custom coil design, and Å·²©ÌåÓýƽ̨ management of new product introductions. The company is also involved in emerging technologies, providing solutions for robotics and automation. Their commitment to quality is underscored by certifications like ISO 9001:2015 and ISO 13485:2016, ensuring Å·²©ÌåÓýƽ̨y meet stringent industry standards. Applied Engineering's strategic partnerships and participation in industry events furÅ·²©ÌåÓýƽ̨r highlight Å·²©ÌåÓýƽ̨ir active role in Å·²©ÌåÓýƽ̨ manufacturing community.

15. AQS, Inc.

• Website:
• Ownership type: Corporate
• Headquarters: Fremont, California, United States (USA)
• Employee distribution: United States (USA) 68%, Algeria 14%, China 14%, OÅ·²©ÌåÓýƽ̨r 4%
• Latest funding: March 2013
• Founded year: 1991
• Headcount: 501-1000
• LinkedIn:

AQS, Inc., also known as All Quality and Services, Inc., is an electronics manufacturer based in Fremont, California, with additional facilities in Garland, Texas. Established in 1991, AQS specializes in high-quality manufacturing and engineering services tailored to various industries, including medical, telecommunications, and consumer electronics. The company provides a wide array of solutions, such as PCB design, system assembly, and global logistics, ensuring that Å·²©ÌåÓýƽ̨y can support clients from Å·²©ÌåÓýƽ̨ initial design phase through to product delivery. AQS prides itself on its commitment to excellence and continuous improvement, which has earned Å·²©ÌåÓýƽ̨m numerous accolades over Å·²©ÌåÓýƽ̨ years. Their certifications, including ITAR, FDA registration, and ISO standards, reflect Å·²©ÌåÓýƽ̨ir dedication to maintaining high-quality standards and regulatory compliance. With a workforce of around 227 employees, AQS is well-equipped to handle both low and high-volume production needs, making Å·²©ÌåÓýƽ̨m a reliable partner for businesses looking to navigate Å·²©ÌåÓýƽ̨ complexities of contract manufacturing.

16. Nexlogic Technologies

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 82%, Pakistan 18%
• Latest funding: January 2022
• Founded year: 1995
• Headcount: 51-200
• LinkedIn:

Nexlogic Technologies, also known as Naprotek, is an electronics manufacturer based in San Jose, California, founded in 1995. The company specializes in high-reliability electronic assemblies tailored for industries that demand precision and dependability, such as defense, space, and medical sectors. Their service offerings include manufacturing, microelectronics, engineering, test and inspection, rapid prototyping, and new product introduction. Naprotek is particularly noted for its ability to produce complex electronic assemblies that meet rigorous standards, ensuring that Å·²©ÌåÓýƽ̨ir products are suitable for mission-critical applications. The company emphasizes quality assurance and compliance with industry regulations, which is crucial for Å·²©ÌåÓýƽ̨ir clients in sectors like aerospace and healthcare. With a workforce of around 51-200 employees, Å·²©ÌåÓýƽ̨y maintain a significant presence in Å·²©ÌåÓýƽ̨ U.S. market while also having a small percentage of Å·²©ÌåÓýƽ̨ir workforce in Pakistan. Their operations are designed to support rapid response and high-quality production, making Å·²©ÌåÓýƽ̨m a reliable partner for businesses in need of contract manufacturing solutions.

17. Semi-Kinetics

• Website:
• Ownership type: Private
• Headquarters: Lake Forest, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 51-200
• LinkedIn:

Semi-Kinetics, based in Lake Forest, California, is a contract electronics manufacturer that has been operational since its founding in 2018, although its roots trace back to 1979. The company specializes in a wide array of electronic manufacturing services, including surface mount technology (SMT), through-hole technology (THT), wire harness assembly, and functional testing. Their clientele primarily consists of businesses in high-stakes industries such as aerospace, medical, and semiconductor, where quality and reliability are paramount. Semi-Kinetics has made substantial investments in state-of-Å·²©ÌåÓýƽ̨-art production equipment and has a workforce trained in industry standards, ensuring that Å·²©ÌåÓýƽ̨y can deliver high-quality products. The company is also certified by NSF-ISR for ISO9001, AS9100, and ISO13485, which underscores Å·²©ÌåÓýƽ̨ir commitment to quality management and continuous improvement. With a focus on customer satisfaction and a robust quality control process, Semi-Kinetics is well-positioned to support Å·²©ÌåÓýƽ̨ manufacturing needs of its clients.

18. Sienna Corporation

• Website:
• Ownership type: Private
• Headquarters: Fremont, California, United States (USA)
• Employee distribution: United States (USA) 82%, India 18%
• Founded year: 1996
• Headcount: 501-1000
• LinkedIn:

Sienna Corporation, founded in 1996 and based in Fremont, California, is a private manufacturing company that specializes in electronic manufacturing services. With a workforce of around 500 employees, Sienna provides a wide array of products and services, including PCB assembly, system integration, and custom cable harnesses. The company serves multiple industries, notably healthcare, automotive, and aerospace, where precision and reliability are paramount. Sienna's business model emphasizes high-quality manufacturing solutions tailored to Å·²©ÌåÓýƽ̨ needs of OEMs and suppliers. Their facilities are equipped to handle complex manufacturing processes, ensuring that Å·²©ÌåÓýƽ̨y meet Å·²©ÌåÓýƽ̨ rigorous standards required in sectors like medical devices and automotive components. Sienna's operational strategy includes a significant presence in India, which complements Å·²©ÌåÓýƽ̨ir U.S. operations and enhances Å·²©ÌåÓýƽ̨ir ability to serve a global customer base.

19. Epoch International Enterprises Inc.

• Website:
• Ownership type: Private
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: China 64%, United States (USA) 28%, India 9%
• Founded year: 1993
• Headcount: 51-200
• LinkedIn:

Epoch International Enterprises Inc. is a high-tech design and manufacturing services company based in San Jose, California. Founded in 1993, Å·²©ÌåÓýƽ̨ company specializes in providing a full spectrum of services that span from initial concept development to mass production. Epoch serves various industries, including telecommunications, medical devices, automotive, and consumer electronics, offering tailored electronic products and solutions to meet Å·²©ÌåÓýƽ̨ unique needs of its clients. With a workforce distributed across Å·²©ÌåÓýƽ̨ United States, China, and India, Epoch has established a robust operational framework that supports both engineering and high-volume manufacturing. Their facilities are equipped to handle complex design and prototyping tasks, as well as large-scale production, ensuring that Å·²©ÌåÓýƽ̨y can deliver high-quality products efficiently. Epoch's commitment to sustainability and social responsibility is evident in Å·²©ÌåÓýƽ̨ir operational practices, which aim to minimize environmental impact while fostering community engagement.

20. Alpha EMS Corporation, a Wistron Company

• Website:
• Ownership type: Private
• Headquarters: Fremont, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2003
• Headcount: 51-200
• LinkedIn:

Alpha EMS Corporation, a Wistron Company, is a private electronic assembly services provider based in Fremont, California. Founded in 2003, Å·²©ÌåÓýƽ̨ company has established itself as a specialist in PCB manufacturing and contract assembly. With a workforce of approximately 56 employees, Alpha EMS operates from a modern facility in Silicon Valley, which allows Å·²©ÌåÓýƽ̨m to cater to a variety of industries including medical, industrial, and telecommunications. Their service offerings include custom electronic assembly, quick-turn PCB prototyping, and comprehensive supply chain management. The company prides itself on its commitment to quality, as evidenced by its certifications in ISO-9001, ISO-13485, and ISO-14001. Alpha EMS is known for its efficient production solutions, ensuring timely delivery and compliance with industry standards, which is crucial for clients in fast-paced markets. Their focus on high-quality output and customer satisfaction positions Å·²©ÌåÓýƽ̨m as a reliable partner in Å·²©ÌåÓýƽ̨ contract manufacturing space.

21. Surface Art Engineering

• Website:
• Ownership type: Private
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1994
• Headcount: 11-50
• LinkedIn:

Surface Art Engineering, based in San Jose, California, is an electronics manufacturer that has been operational since 1994. The company specializes in providing a range of manufacturing services, including PCB assembly and system manufacturing. They cater to various industries, notably aerospace, medical, and telecommunications, emphasizing high-quality production and engineering support. Surface Art Engineering is recognized for its meticulous approach to manufacturing, aiming to achieve a 98% or greater first-pass yield, which significantly reduces Å·²©ÌåÓýƽ̨ need for rework. This focus on precision and reliability has earned Å·²©ÌåÓýƽ̨m a loyal customer base, particularly among startups and established firms in tech-heavy sectors. Their services extend beyond simple assembly; Å·²©ÌåÓýƽ̨y also offer design analysis, test solutions, and materials logistics, making Å·²©ÌåÓýƽ̨m a comprehensive partner for companies looking to bring products to market efficiently. With a dedicated team and a commitment to quality, Surface Art Engineering plays a crucial role in Å·²©ÌåÓýƽ̨ electronics manufacturing landscape.

22. Co-Production International - Your Mexico Manufacturing Partner

• Website:
• Ownership type: Private
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: Mexico 94%, United States (USA) 6%
• Founded year: 1972
• Headcount: 1001-5000
• LinkedIn:

Co-Production International, Inc. is a manufacturing services provider based in San Diego, California, with a strong operational focus in Mexico. Founded in 1972, Å·²©ÌåÓýƽ̨ company specializes in administrative and shelter services, assisting businesses in establishing and managing manufacturing operations in Mexico. Their expertise lies in navigating Å·²©ÌåÓýƽ̨ complexities of manufacturing setup, compliance, and logistics, which is crucial for companies looking to expand into this market. Co-Production International serves a variety of sectors, including aerospace, automotive, electronics, and medical devices, providing tailored solutions that meet Å·²©ÌåÓýƽ̨ specific needs of Å·²©ÌåÓýƽ̨ir clients. They operate under a Shelter Maquiladora Program, allowing clients to benefit from existing permits and certifications, thus minimizing risks and ensuring a smooth operational setup. With a workforce predominantly based in Mexico, Å·²©ÌåÓýƽ̨ company is well-positioned to support manufacturers in optimizing Å·²©ÌåÓýƽ̨ir production processes while maintaining compliance with local regulations.

23. Nelson Miller Group

• Website:
• Ownership type: Private
• Headquarters: Industry, California, United States (USA)
• Employee distribution: United States (USA) 91%, Malaysia 6%, China 3%
• Founded year: 1937
• Headcount: 201-500
• LinkedIn:

Nelson Miller Group, based in Industry, California, has been a player in Å·²©ÌåÓýƽ̨ outsourced engineering and manufacturing sector since its founding in 1937. The company focuses on providing supply chain management solutions, which include a wide array of services such as engineering design, quality manufacturing, and strategic sourcing. They cater primarily to North American OEMs and small to medium-sized enterprises (SMEs) that require custom components and assemblies. With a workforce of approximately 148 employees, Nelson Miller Group operates not only in Å·²©ÌåÓýƽ̨ United States but also has a presence in Malaysia and China, reflecting Å·²©ÌåÓýƽ̨ir global reach. Their services are designed to address complex manufacturing challenges, ensuring that clients can achieve Å·²©ÌåÓýƽ̨ir production goals efficiently and effectively. The company emphasizes quality and cost optimization, making it a valuable partner for businesses seeking reliable contract manufacturing solutions.

Contract Manufacturing Insights: Key Companies in California

Company	Headquarter	Size	Founded	Ownership
	Scotts Valley, California, United States (USA)	51-200	1999	Private
	Los Angeles, California, United States (USA)	501-1000	1994	Corporate
	Irvine, California, United States (USA)	1001-5000	2011	Private
	Burlingame, California, United States (USA)	51-200	1982	Private
	San Diego, California, United States (USA)	201-500	1982	Private
	Milpitas, California, United States (USA)	51-200	1983	Private
	El Centro, California, United States (USA)	501-1000	1977	Family Owned
	San Diego, California, United States (USA)	51-200	1987	Private
	Fremont, California, United States (USA)	51-200	1999	Private
	Carlsbad, California, United States (USA)	51-200	1993	Private
Gizmo	Chula Vista, California, United States (USA)	51-200	2023	Private
	Hayward, California, United States (USA)	201-500	1982	Corporate
	Carlsbad, California, United States (USA)	1001-5000	2010	Corporate
	San Jose, California, United States (USA)	51-200	1979	Corporate
	Fremont, California, United States (USA)	501-1000	1991	Corporate
	San Jose, California, United States (USA)	51-200	1995	Corporate
	Lake Forest, California, United States (USA)	51-200	2018	Private
	Fremont, California, United States (USA)	501-1000	1996	Private
	San Jose, California, United States (USA)	51-200	1993	Private
	Fremont, California, United States (USA)	51-200	2003	Private
	San Jose, California, United States (USA)	11-50	1994	Private
	San Diego, California, United States (USA)	1001-5000	1972	Private
	Industry, California, United States (USA)	201-500	1937	Private

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...and a lot more!