In 1962 Kitaphanich Family established the Somboon Spring Limited Partnership which was considered as the pioneer in manufacturing the springs for motor vehicles in Thailand.
In 1995 Somboon Advance Technology Co., Ltd (SAT) has begun to be established by shareholders of Kitaphanich Family and Bangkok Spring Industrial Co., and listed on the stock exchange of Thailand in 2005.
SAT is a Thailand-based company engaged in the manufacture and distribution of motor vehicle parts for passenger cars, pickup trucks, trucks and agricultural machinery. The Company’s products include axel shafts, disc brakes, drum brakes, exhaust manifolds, leaf springs, stabilizer bars, hot coil springs, among others. The main customers are the original equipment manufacturers (OEMs) with the long-term purchase contract and the replacement equipment manufacturers (REMs). It operates production plants in Samutprakan province and in Rayong province. The Company's subsidiaries include Somboon Malleable Iron Industrial Company Limited, Bangkok Spring Industrial Company Limited, International Casting Products Company Limited, and Somboon Forging Technology Company Limited.