Bangkok Synthetics Co., Ltd. (BST) was established in 1991 as a pioneer of C4 business in Thailand from mixed C4 feedstock supply by Olefins plants, under the second stage of the national petrochemical industrial development program initiated by the Thai Government. At present, the Company is the largest producer of mixed C4 products in the Southeast Asian Region. BST debuted commercial operations in 1995 and expanded its production capacity in 1998 to correspond to the increasing demand in petrochemical industry. The Company's products include Butadiene, Butene-1,MTBE and C4 Raffinates. These products are major raw materials of such downstream petrochemical industry as the manufacturing of synthetic rubbers and plastic resins,which are essential parts of our daily life in the form of medical devices, food containers, tires, shoes, auto parts,electric appliances, sports equipment, etc.