Yongstar Hydraulic Co., Ltd. is founded in 1996, being one of the earliest valve test equipment manufacturers in China. Yongstar manufactures only valve test benches and has became supplier of many valve test machine users both at home and abroad.Our factory designs and improves new hydraulic valve testing benches according to GB/T13927-92 (Universal Valve Pressure Test) and JB/T9092-99 (Valve Inspection and Test) and American AP1598-99 standard. This series test equipment collects hydraulic, motor, test pressure and liquid medium storage circulation, with perfect function, stable performance and high degree. This equipment is applied to testing tension and airproof status for various high-middle pressure valves. Our equipment is advanced at home and abroad. We have exported our test benches to Taiwan area, Iran, the Netherlands, Singapore, and Germany.We stick to the tenet of "quality first, and user uppermost" and insist on the guideline of "develop based on technique, and live based on quality". We will work harder and provide the best products for you with the most favorable price.