Taiwan Styrene Monomer Corp. engages in the production and sale of styrene monomers. It operates through the following business segments: Plastics, Investment, Electronics, and Others. The Plastics segment engages in the production and sale of styrene monomers, chemical materials, and plastic materials. The Investment segment provides general investment services. The Electronics segment engages in the development of high temperature graphitization of carbon materials and sale of electronic components. The Others segment includes electromechanical installation engineering, general hotel business, and medical equipment wholesale. Its products also include para-diethyl benzene, toluene, and ethyl benzene. The company was founded on November 16, 1979 and is headquartered in Taipei, Taiwan.