1.CE certificate 2.ISO9001:2000 certificate 3.brass/Nickel plated ... according to ASTM B16 or ASTM B124Size1/2",3/4",1",1 1/4",1 1/2",2" ( DN15,DN20,DN25,DN32,DN40,DN50) or ... suppliable, OEM/ODM welcome. DNSIZEAB151/2"3259203/4"3866251"4276321 1/4"5586401 1/2"6593502"79107