Contract manufacturing services provide parts and equipment on behalf of original equipment manufacturers (OEM). The design and brand name remain the property of the OEM. Contract manufacturing may involve a complete range of services from design and prototyping to final production, assembly, and quality assurance for complete products

Electronics assembly service companies based on providing contract design, manufacturing, and related product support services on behalf of electronics OEMs

Electrical and electronic sub-assemblies are individual, functional units that comprise a piece of electrical equipment

Specialized or proprietary products and accessories related to the manufacture of electronic or semiconductor components

Industrial electronic repair services fix, repair, overhaul, refurbish, and warranty industrial electronic equipment such as power supplies, motor drives, controllers, meters, and oscilloscopes

Contract packaging services package and/or label products and materials produced by other companies on a contract basis

Electrical contracting services install and maintain electrical distribution equipment; interior, exterior and municipal lighting; security systems and closed circuit television systems (CCTV); and information technology or IT systems

Integrated circuit packaging is the final stage of semiconductor device fabrication in which the bare die or bare boards are placed inside of a protective packaging that provides connectors or pins for connecting to other devices.

Electrical and electromechanical assembly services provide board-level assembly, chassis and rack panel wiring, and front panel assembly. Typically, suppliers provide the complete turnkey production of electronic and electromechanical finished products from procurement through final assembly with testing and burn-in, if required

Environmental exposure (climatics) testing services use humidity, pressure, temperature, vibration, exposure to ultraviolet light (UV) and other climatic variables to test samples, parts and components, and finished products.

Product and component testing services is the evaluation of a finished product or component through performance in electrical, life, environmental exposure, dynamic, ergonomic or other specialized tests.  Also testing to standards such as UL 489, CE or MIL-STD 810.

Engineering consulting firms provide engineering services and expertise to companies in need of a specialized skill-set.  Professionals in this category work with clients to define solutions to problems or to help determine and recommend the best course of action for a given initiative.

IC sockets and interconnect components interface or connect a microelectronic semiconductor chip to a board or larger scale device.

Calibration and repair services for vibration, acoustic, electrical / electronic test, environmental, dimensional, NDT, analytical, process and other specialty instruments, sensors and related equipment

Electrical and EMC testing services evaluate parts and products for electromagnetic compatibility (EMC), electromagnetic interference (EMI), radio frequency interference (RFI), dielectric properties, conductivity, electrostatic discharge (ESD), insulation resistance, and other electrical characteristics.