1,Cetificates:ISO 9001,CE 2,Quick delivery 3,Oem ,Odm Accept 4,Produce by international standard ... ball valve: 1,Size: 1/4".3/8',1/2',3/4',1',11/4',11/2',2',21/2,3',4'2,Certificate: ... ISO9001 , CE 3,material: brass body , brass ball, steel handle 4 ... certificate and mill certificate if required.Production step :1) purchasing the material and forged the semi- ...