... pex, pex-al-pex, pap, pe-rt, evoh pipe and fittings, biggest factory in DIAN KOU, China Zhongde ... 30 provinces,city and municipality.Zhejiang Zhongde Ruri Pipe Co.,Ltd belongs to Executive Director Unit of ... guild organized the management activities of PP-R pipe quality in the first half year during 2005 to ... year,so it expressed its advantage of quality in this field.however,we havent been satisfied ...