... 3,Oem ,Odm Accept 4,Produce by international standard Brass ball valve Brass ball valve: 1,Size: 1/4".3/8',1/2',3 ... /2',2',21/2,3',4'2,Certificate: ISO9001 , CE 3,material: brass body , brass ball, steel handle 4)Temperature: -30certificate and mill certificate if required.Production step :1) purchasing the material and ...