Chongqing Baoercheng Zhaoliang Science & Technology Co., Ltd.---named from the spelling of the inventor, is a professional company executing, transferring and authorizing patented products. Its subsidiary research institute has been brought up simultaneously together with the development process of many patent techniques we own. It is a Scientific type of company united with scientific research, manufacturing, production and marketing.

It has manufactured the first spiral winded plastic pipe and the specific winding machine for large caliber which has been produced under our license authorization in 26 areas in China and has been widely accepted by the piping industry in the World. It has obtained a title of National-classed Key product commonly certified by National Scientific Department, Ministry of Commerce, General Environmental Bureau, General Quality Supervision Bureau and also acquired as an international patent technique.

Large-caliber Spiraled winding plastic pipe can be widely used in urban sewage disposition, water channeling, agricultural irrigation, construction, bridge culvert, communications pipe network and other infrastructure constructions.