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HENAN Liwei Industry Co., ltd. (the former Henan Liwei Pipeline Equipment Co., Ltd.) located at Shangjie District. Zhengzhou city is a manufacturer specializing in processing various steam, water, windpipe expansion and compensation joints, and a main base for producing rubber ,metal and non-metallic pipe joints, It is also the appointed enterprise by the former chemical industry ministry .national construction ministry and general petrol chemical company member unit China Water Supply Association and power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.