As we all know, quality is the life of an enterprise.ZhengFeng and every employee of ZhengFeng attach great importance to quality requirements because of its corporate culture. We have developed an excellent quality process flow, which can guarantee excellent qualified rate from the material analysis, physical performance test, aging treatment before processing, dimension test after processing, the thickness after spraying treatment, adhesion test after assembly, performance test and the final inspection after delivery. Each valve has its unique code and can be traced back to the source of any spare parts of each valve and to the person who processes them. We have a lot of quality control certificates and every year we produce all kinds of valves that are tested by the national inspection center. Now, we are one of the best water control valves manufactures in China. In line with the policy of winning customer satisfaction with quality, we try our best to join the world's best quality and best performance water valve brands. Looking forward to the customer's witness.