Top Box Build Assembly Companies in California

Box build assembly companies in California play a vital role in the electronics manufacturing ecosystem by delivering complete system integration solutions. Box build assembly refers to the process of assembling printed circuit boards, cable harnesses, enclosures, and mechanical components into fully functional electronic systems. These companies provide turnkey manufacturing, electromechanical assembly, cable integration, and product testing services to industries such as aerospace, medical devices, telecommunications, robotics, automotive, and industrial automation.

California is home to some of the most advanced box build assembly manufacturers, offering scalable production, engineering expertise, and reliable system integration. This article highlights the top box build assembly companies in California, including their services, capabilities, and industries served.

Top Box Build Assembly Companies in California

1. Advanced Electronics Sourcing Group

Location: California, USA

Advanced Electronics Sourcing Group is a trusted provider of box build assembly and electronic manufacturing services. The company supports OEMs with complete system integration, from PCB assembly to final product configuration. Their engineering-driven approach ensures efficient production and reliable product performance.

Detailed Services

• Box build assembly and system integration
• PCB assembly integration
• Cable and wire harness installation
• Mechanical and enclosure assembly
• Functional testing and inspection
• Turnkey manufacturing solutions

Industries Served

Medical devices, industrial automation, telecommunications, consumer electronics, and aerospace.

Capabilities

The company supports prototype development, low-volume production, and high-volume manufacturing with precise assembly and efficient production workflows.

2. Sunnytech

Location: California, USA

Sunnytech is a reliable electronics manufacturing company offering professional box build assembly services. The company provides full assembly solutions that include PCB integration, enclosure assembly, and cable installation.

Detailed Services

• Electronic box build assembly
• PCB integration and system assembly
• Cable harness assembly
• Mechanical assembly and product configuration
• Functional testing

Industries Served

Consumer electronics, telecommunications, automotive electronics, and industrial equipment.

Capabilities

Sunnytech delivers scalable manufacturing services with advanced assembly processes and precision system integration.

3. Stracon, Inc.

Location: Irvine, California, USA

Stracon, Inc. specializes in box build assembly and electromechanical integration for complex electronic systems. The company provides complete contract manufacturing solutions, ensuring reliable assembly and consistent product quality.

Detailed Services

• Box build assembly and integration
• Cable and wire harness installation
• PCB assembly integration
• Electromechanical assembly
• Product testing and inspection

Industries Served

Defense, aerospace, telecommunications, automotive, and industrial automation.

Capabilities

Stracon supports both low-volume and large-scale manufacturing, offering flexibility and efficient production management.

4. Digicom

Location: Oakland, California, USA

Digicom is a well-established electronic manufacturing services provider offering complete box build assembly and system integration. The company delivers end-to-end manufacturing solutions for OEMs across multiple industries.

Detailed Services

• Box build assembly and system integration
• PCB assembly and cable harness integration
• Electromechanical assembly
• Functional and system testing
• Final product assembly and packaging

Industries Served

Medical equipment, aerospace, telecommunications, defense, and industrial electronics.

Capabilities

Digicom provides advanced assembly services, engineering support, and efficient production for complex electronic products.

5. CTD-USA

Location: California, USA

CTD-USA offers reliable box build assembly and electronic manufacturing services tailored to OEM requirements. The company focuses on accurate assembly, efficient integration, and dependable system performance.

Detailed Services

• Electronic box build assembly
• PCB integration and cable assembly
• Mechanical enclosure assembly
• Product testing and validation

Industries Served

Industrial automation, telecommunications, consumer electronics, and commercial equipment.

Capabilities

CTD-USA provides scalable manufacturing services and supports both prototype and production assembly.

6. Synergetics

Location: California, USA

Synergetics provides complete electronic manufacturing and box build assembly solutions. The company focuses on delivering integrated system assembly and reliable production services.

Detailed Services

• Box build assembly and product integration
• PCB and cable assembly
• Mechanical assembly
• Final product testing

Industries Served

Industrial automation, telecommunications, and commercial electronics.

Capabilities

Synergetics offers flexible production, engineering support, and efficient system integration.

7. Cable Conn Industries

Location: California, USA

Cable Conn Industries specializes in cable assembly and box build manufacturing services. The company provides integrated assembly solutions for electronic systems.

Detailed Services

• Box build assembly
• Cable harness assembly and integration
• System assembly and enclosure installation
• Electronic product assembly

Industries Served

Industrial equipment, automotive electronics, and telecommunications.

Capabilities

Cable Conn Industries offers precision assembly services and supports custom electronic product manufacturing.

8. Jetronics

Location: Santa Rosa, California, USA

Jetronics is an experienced electronics manufacturer offering custom box build assembly and integrated system solutions. The company has extensive expertise in assembling complex electronic products.

Detailed Services

• Box build assembly and chassis assembly
• Cable and wire harness integration
• Electromechanical assembly
• Product assembly and testing

Industries Served

Industrial electronics, telecommunications, and commercial equipment.

Capabilities

Jetronics supports custom assembly projects, system integration, and volume production.

9. CTEMS Company

Location: Silicon Valley, California, USA

CTEMS Company provides advanced box build assembly and electromechanical manufacturing services. The company supports innovative product development and production.

Detailed Services

• Box build assembly and system integration
• Cable and wire harness assembly
• PCB assembly integration
• Functional testing and inspection

Industries Served

Semiconductor equipment, electric vehicles, industrial automation, and computing systems.

Capabilities

CTEMS offers engineering support, prototype assembly, and high-volume manufacturing.

10. Cirtronics Corporation

Location: California, USA

Cirtronics Corporation is a trusted electronics manufacturing provider delivering box build assembly and complete system integration services. The company focuses on assembling high-performance electronic products.

Detailed Services

• Box build assembly and electromechanical integration
• PCB and cable assembly integration
• System assembly and product configuration
• Functional testing and product validation

Industries Served

Medical devices, robotics, aerospace, defense, and industrial automation.

Capabilities

Cirtronics provides reliable manufacturing, advanced assembly solutions, and scalable production services.

Conclusion

Box build assembly companies in California provide essential manufacturing services that transform electronic components into fully functional systems. Companies such as Advanced Electronics Sourcing Group, Stracon, Digicom, and Cirtronics offer complete turnkey assembly solutions, including PCB integration, cable harness assembly, and full product system integration.

These manufacturers support industries that require precision, reliability, and scalable production. By partnering with experienced box build assembly companies in California, OEMs can ensure efficient manufacturing, faster product delivery, and high-quality electronic system assembly.