... 2.Color: white 3.ISO9001,ISO14001,OHSAS18001 4.Easy & convenient install UPVC free union adaptor 1.As a company listed in ... main products include PVC-U, PP-R, and PE pipes and fittings, PVC-U windows and doors, telecommunication ducts, PE fuel gas, ... rust, so without re-pollution to the water and pureness;Convenient and reliable installation, low construction expenses;Good sealing performance;Healthy ...