1, technical standard: 1).Material: brass cw614n, cuzn39pb3, cw617n, cuzn40pb2, dzr 2).Technology: forging, plating, polishing 3).Connection: male and female, coupling, union 4).Size: 12*16, 16*20, 20*25, 26*32, ......, 51*63. 5).Used for gas, water supply systems, drinking water.. 2, advantage: 1) fast material supply. Have own copper bar factory of group. 2) every valve put through a six-step qc process before delivery. Material control, machining quality control, in-coming material inspection, assembly line quality control, leakage testing, final inspection before delivery. 3) 100% leakage test. 4) strictly and perfect management in production. 5) guaranteed quality in competitive price. 6) on-time delivery. 7) complete r&d facilities and excellent team. 8) annual r&d projects reach the number of 100. Have rich experience and strong ability to develop new products. 1)the package standard:standart export carton, box. 2)if customer has special requirement.It is available to provide the colorful package against the design of customer.