Sun Metal Co., Ltd was established in 1991 and is a manufacturer and distributor of rolling shutter doors of international standards, under the brand " Sun Metal", established from the cooperation of the Sri Krungthon Group.

The company, Thai people are committed to raising the standard of living of people to international standards with Sanwa Sutter Corporation of Japan, which is a company specializing in product technology applied to office buildings accommodation and has been certified by many countries for over 30 years, with a registered investment of 355 million baht on behalf of Sun Metal Co., Ltd.