Zhejiang Shuanghuan Plastic Valve Enterprise.,Ltd is an American-Chinese cooperative enterprise which derived from Zhejiang Huangyan Plastic Mould Factory (set up in February 1992).Situated in Huangyan Chengguang Nancheng Economic Development Zone, it covers an area of 6963 square meters and 8700 building square meters. It has 822 employees, including 41 senior engineers and technicians. Nowadays more and more talents are Enter the company and working together for the entry of international market. At present we have 12 automatic product lanes and 156 various plastic injecting machines (60-6500g),10 mixing material machines and 30 sets of machine tools and some advanced testing systems. The annual turnocer of the company is 10,000 tons PVC and 3,000 tons PRC. The main products are draining pipes, ball valves, butterfly valves, PPR pipes, etc.The production value of 2001 reached 150 million yuan.