Weifang Changsheng Pipe Co.Ltd is the company specializing in developing and producing grooved couplings and fittings. We have 12 years experience in R&D and production. Our products have been approved by FM、UL and passed ISO9001 quality control system.We not only provide you first class products with favourable price but also excellent after-sale services. All in a word,Our products is of high cost performance in both quality and price.We look forward to cooperate with customers worldwide and be mutually benefitted from the cooperation.Looking forward to receiving your enquiry soon.Thank you ! Best wishes Jack Liu Weifang Changsheng Pipe CO.,LTD Website:www.cswpt.com Tel/Fax: +86 536 7675088/7676677 Email: wfcswptl@gmail.com；wfcswptl@hotmail.com msn:wfcswptl@hotmail.com