... pex-al-pex, pap, pe-rt, evoh pipe and fittings, biggest factory in DIAN KOU, China Zhongde Ruri PP ... productby the construction institue of 30 provinces,city and municipality.Zhejiang Zhongde Ruri Pipe Co.,Ltd ... of our city,the committee of our government and guild organized the management activities of PP- ... , the company gave a lot of support and jointed actively.zhejiang zhongde ruri pipe co,.ltd ...