EIC has a centralised manufacturing operation based in Bangkok, which includes both a wafer fab and final assembly. This manufacturing plant is ISO 9001 , ISO 14001 and ISO/TS 16949 certified and has served as a model for manufacturing plants nationwide. The company effectively supplies products to customers using proven systematic and reliable processes.

The company utilizes state-of-the-art technology and machinery in its production.
In addition, the company has implemented Total Quality Management to operate and control the production process.

A comprehensive trace system allows every item to be identified, and details of material and operation to be recorded. The meticulous testing carried out at each step of the process ensures that all company employees are committed to the highest quality of manufacturing products.