Wanchai Kunanantakul

Siam Goshi Manufacturing Co. Ltd. is a Thai company that manufactures and markets motorcycle parts. The private company is based in Rayong, Thailand.

Panasonic Electric Works Steel Thailand Co., Ltd. is a company that manufactures electric wire and cable.

Siam Fuji Ware (1988) Co., Ltd. is engaged in manufacture of enamel cookware. Its products include casserole, pan, pot, bowl, tea kettle, whistling kettle, and tray. The company was founded in September 1988 and is headquartered in Samut Prakan, Thailand.

Hirokoh (Thailand) Ltd. engages in the distribution and rental of movable instant offices, and restrooms. It offers park homes, toilets, guard man boxes, wall warehouses and modular schools. The company is headquartered in Bangkok, Thailand.

Part of Broadview Holding BV, Formica (Thailand) Co. Ltd. is a company that manufactures and supplies laminated sheets, decorative laminated boards and adhesives. The company is based in Samutprakarn, Thailand.

Siam Steel Group International Co., Ltd. is engaged in manufacture and distribution of furniture, construction materials, renewable energy, industrial goods and vehicles. Its products categorized into 6 groups; furniture group, construction materials and prefabricated and modular building group, renewable energy group, industrial goods group, vehicle group and service group. Furniture group includes cabinet, lockers, desks, tables, chairs, safes, shelving system. Construction materials and prefabricated/modular building group includes prefabricated building and modular building, bathroom pods, smart wall system, steel construction solution, part and components for buildings. Renewable energy group includes solar farm, solar rooftop, biomass energy, Refuse Derived Fuel and Palm Kernel Shell. Industrial goods group includes Decorative Laminated Sheet, Honeycomb Core, flood protection panel and related products. Vehicle group includes part and components for automobile and motorcycle. Service group includes rental and service of mobile toilet and unit house. Siam Steel Group International was founded in 1953 and is headquartered in Samut Prakan, Thailand.

Siam United Hi-Tech Co., Ltd. is a Thai company that manufactures and supplies electric home appliances.

Siam Forest Management Ltd. is a private company based in Phrapradaeng, Thailand. The Thai company provides forest management services.

Siam International Energy Ltd. invests in renewable energy sources such as solar, biomass, waste to energy, and wind energy. The private company is based in Phrapradaeng, Thailand.

Siam Biomass Product Ltd. provides investment services.

Siam Biomass Manufacturing Ltd. provides renewable energy services. The private company is based in Phrapradaeng, Thailand.

Siam International Biomass Ltd. provides investment in alternative energy.

Siam Green Energy Plus Ltd. invests in alternative energy. The private company is based in Phrapradaeng, Thailand.

Siam New Power Ltd. provides electric services. The private company is based in Phrapradaeng, Thailand.

Siam Wealth Energy Ltd. provides investment services.

Bangphra Green Energy Ltd. provides electric services. The private company is based in Phrapradaeng, Thailand.