; Started in 1989. TA Chen international Inc. (TCI) is a wholesaler of a variety of pipe fittings that provides various related services. Located in vernon hills. ILL. . The firm is one of the leading suppliers of stainless still. Aluminum. Duplex and nickel alloy products. The Company serves more than 3.000 customers with It's over 8 strategically locations. TA Chen international Inc. (TCI)...