Y.S.S. (Thailand) Co., Ltd. - Manufactures motorcycle shock absorbers. [In Thai and English] New Somthai Motor Work Co., Ltd. - Part manufacturer for cars and motorcycles. Features quality control. [In Thai and English] Thai Denso Group - Manufactures automotive technology systems, such as powertrain control, thermal, and electric systems. [In Thai and English] Thai Summit Group - Part manufacturer of automotive, motorcycle, and electrical appliances. Features business units. [In Thai and English] Thai Yang Kitpaisan Co., Ltd. - Manufacturer of automotive filters and rubber parts. TPSC Industry - Manufacturer of Japanese motorcycle spare parts for mufflers, fenders, and sprockets. Hwa Fong Rubber (Thailand) PCL - Manufacturer of tire and tube of bicycle, motorcycle, and other types of vehicles, such as trolley forklift and golf cart. Features research and environment. [Thai, English] Somboon Advance Technology PCL - Manufactures rear axle shaft, brake drum, brake disc flywheel, leaf spring, stabilize bar, and coil spring. Social responsbility, corporate governance, and investor relation. [Thai, English] FIBO Corp Co., Ltd. - Provides fastening system integration, material handling, image processing, installation gauge, and layout design for car assembly. Located in Samutprakarn.