Zhejiang Haiyi Valve Co.,Ltd. is a professional producer of safety valves. We've passed the certification of ISO9001 International Quality Management System and gained the AZ license issued by General Adiministration of Quality Supervision,Inspection and Quarantine of the PRC.Now we have more than 80 sets of precision equipment of different kinds ,and various processing,inspection and testing devices for NC,physical/chemical analysis,flow detection and so on.