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ZHEJIANG JADEHOPE DEVELOPMENT CO., LTD is the subsidiary company of ZHEJIANG FIRSD GROUP CO., LTD. The main production enterprises is Longquan jinhong auto Air-condition Co.,LTD Co.,LTD. Zhejiang Longquan Dasha industrial zone is our R & D base. We are specialized in the copper tube insulation , copper fitting, stop valve . Our products have been sold well over 30 countries and regions in the world.