Harbin Donggao New Type Pipe Co., Ltd. is a wholly-owned subsidiary of Heilongjiang Communications Development Co., Ltd. (stock code 601188), a state-controlled listed company, and its predecessor is Dalian Donggao New Type Pipe Co., Ltd. Founded in 2000, it is now registered in Taiyangsheng Industrial Zone, Liming Town, Xiangfang District, Harbin City, with a registered capital of 50 million yuan and a paid-in capital of 80 million yuan. The Harbin base plant covers an area of 40,000 square meters, and the standard factory office building 1 Ten thousand square meters. The company is one of the first domestic manufacturers to introduce the patented technology and equipment of German Carla company and realize industrialization, and has passed ISO9001:2015 quality system certification, ISO14001:2015 environmental management system certification, ISO45001:2018 occupational health and safety management system certification and It is recognized as a high-tech enterprise and is a participating unit of the national standard. It is also a wholly-owned subsidiary of the only state-controlled listed company among the domestic companies producing carat tubes. The company now has various water supply and drainage pipe production lines with an annual output of 20,000 tons of various pipes. The specifications of the drainage pipes range from DN200 to DN3000, realizing full product coverage. Products are widely used in municipal construction, sewage treatment, agricultural irrigation, railways, highways, bridges and culverts, pharmaceuticals, printing and dyeing, nuclear power, thermal power, reclaimed docks, mine tailings discharge and other fields. The company's plastic pipes, pipe fittings, and pipeline products have now been sold to more than 20 provinces, municipalities and autonomous regions across the country, and achieved zero export breakthroughs in 2011. The company's high-density polyethylene winding reinforced pipe successfully entered the African market, defeating many competitors in the construction of the infrastructure pipe network of the Botswana aid project, and won the bid in one fell swoop. The company's products and services have won unanimous praise at home and abroad. "Donggao Pipe" has become a famous brand product in my country's drainage pipes. Donggao Pipes will, as always, uphold the tenet of being an honest person, being a solid pipe, having unlimited sincerity and eternal service, and will exclusively focus on the R&D and manufacturing of water supply and drainage plastics and its composite pipe products.