PTH has developed the Double- C products independently, has a number of invention patents.PTH has introduced a fully automatic CNC production line for processing and production,which reducing the complicated processing procedures to compensate for the complex processing of the steel structure and the needs for paint treatment on the surface. These houses are located by the Huanghe River,it's based on PTH's new light steel structure-'double C system'.Fast!Economical!and enviroment friendly!All the gaps,columns,beams are fullfilled by XPS material.and the windows are double glaze with inert gas in the middle,also set thermal cut-off bridges between the steel connection points.