... . We are also the leading manufacturer of 60” plastic valves and up to 24” pipes and fittings. Technical Innovation, High ... supply contract with Taiwan biggest industrial group of Formosa Plastic Co.1988.08Established Kaohsiung 1st plant in Da-Fa ... Jiangsu, China2003.09Set up a modernization plant in Taichuang Harbor Export processing Zone, Specialize in production of plastic valves and CPVC, ...