... -wall corrugated pipe of all types, HDPE (from type DN20 to type DN1200) water supply, gas supply pipe, ... 173mu and registration capital $1248. In the phase I of the project, 41,600 sq.m. of ... .m. of office buildings have been constructed. The company is mainly engaged in researching, manufacturing and ... wall corrugated pipe of all types, HDPE (from type DN20 to type DN1200) water supply, gas supply pipe ...