... valves, PVC foot valves and PE gas valves. Qinhuangdao YDKL Plastic Co., Ltd., founded by Yanshan University in 2000, is a high ... specializing in the production of plastic valves, auto plastic parts, injection moulds and various plastic products. Plastic valves we supply include PVC ... East and Africa.Our goal is to supply world-class plastic products and service at the lowest possible prices. We ...