Dory Machinery Manufacture Co.,Ltd is one of the professional manufacture for valve testing equipments, industrial valves and hammer unions. our company are ISO certified, our group company have obtained API,CE and other certifications. Our products & ServicesValve Hydraulic Test Bench/Valve Testing Equipments/Valve testing stand/Valve test Rig/Valve test unitValve grinding machine, valve lapping machine Industrial valves, API6A wellhead valvesWelcome to send us your enquiries.