Thai Summit Group is the leading auto parts manufacturer of Thailand. The group was established back in 1977 and has a major role to drive Thailand's important auto parts industry. Thai Summit Group has manufacturing facilities at all major industrial clusters based in Laemchabang, Nakornnayok, Rayong and Samut Prakan in Thailand and have global manufacturing facilities in China, India, Indonesia, Japan, Malaysia, USA and Vietnam.

Currently Thai Summit Group has more than 40 subsidiary companies covering manufacturing activities for all important industries of Thailand, as the major parts manufacturer for the automotive, Agricultural machinery and Electric appliance industry for assembly of the molded parts, assemblies, components, plastic injection and blow molded parts, aluminum die-casting parts, Wiring Harness for automobile, Toolings for metal & plastics and assembly jigs including machines used in the production.