QST International Corp. manufactures and sells screws and nuts in the Mainland, the America, Germany, Taiwan, and internationally. The company provides proprietary fasteners, such as screws and induction hardened bolts; and auto fasteners, including weld bolts and weld studs, screws and washer assemblies, multi-die headed pins and rivets, and special screws per print, as well as internal, external, and non fasteners. It serves car manufacturers. The company is also involved in manufacture and sale of automotive fasteners; management, leasing and development of real estate; invests in; supply of metal parts, hardware tools, and plastic products; wholesale and import/export of molds and precision instruments; and testing and logistics services. QST International Corp. was incorporated in 1985 and is based in Tainan City, Taiwan.