Sub system assembly & integration

Sub system assembly & integration

Electronic contract manufacturing services of four engineers specialize in the manufacture of high quality, high reliability subsystem and system level assemblies. Our high mix environment can support low production to high volume production requirements. We offer custom preparation and testing processes, and can work with you on your unique environmental screening.

System Assembly and Integration/Electronics Assembly

Four Engineers’ electronic contract manufacturing services specialize in the manufacturing of high-quality, high-reliability subsystem and system-level assemblies. Our high-mix environment can support production requirements from low to high volume. We offer custom manufacturing and test processes, and can work with you on your unique environmental screening.

Our system builds capabilities include:

  • Integrating multiple PCB assemblies
  • Enclosure system configuration
  • Sub-chassis assembly and testing
  • Cable harness manufacturing from third party resources
  • Cable & wire routing/installation
  • Complete mechanical assembly & configuration from third party resources
  • Full system and subsystem integration and testing
  • ESS thermal cycling chamber from third party resources


Four Engineers perform critical testing of your subsystem assemblies per your current needs or we can customize a test plan and procedure to meet your product or quality requirements. Whether cable assemblies – harnessing for military/defense applications or discreet test stations for electro-mechanical assemblies, we will combine test equipment and thorough Standard Operating Procedures (SOP) – Work Instructions (WI) to ensure designated test points are covered and documented.

Packing Logistics

With test development and planning, Four Engineers applies the same level of detail to your packaging needs. Whether the customer can be delivered on a daily basis or sent to a warehouse from abroad, Four Engineers ensures timely, efficient services, safe and secure.

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