Prapa Viriyaprapaikit

Part of Sahaviriya Steel Industries Public Co. Ltd., Sahaviriya Plate Mill PCL is a steel business group with over 50 years of experience in the production of hot iron sheets. The company is based in Bangkok, Thailand and has a production capacity of 652,000 tons per year. In addition to their steel production, the Thai company also participates in various charitable activities such as blood donation and supporting Father's Day celebrations.

Thai Cold Rolled Steel Sheet Public Company Limited is a steel manufacturing company based in Bangkok, Thailand. The company specializes in producing high-quality cold rolled steel sheets. Win Viriyaprapaikit has been the CEO of the company since 2008.

Thai Coated Steel Co., Ltd. is engaged in manufacture and distribution of electro galvanized steel sheet. The company was founded in March 20, 1990 and is headquartered in Bangkok, Thailand.

Sahaviriya Steel Industries Public Co. Ltd. engages in the manufacturing and distribution of hot-rolled coils. The company operates through the following segments: Manufacture of Hot Rolled Coils, Maintenance Services, and Deep-sea Port Services. It also provides marine shipping services; offers high-powered tug boat services; and manufactures and repairs industrial machinery and equipment, mechanical parts, and equipment and steel structures. The company was founded on March 13, 1990 and is headquartered in Bangkok, Thailand.