There are plant buildings following international standard, and the performance-testing center for gas equipments, which currently is the only one in the industry in China. In addition to follow the industry standards when we are designing、manufacturing、assembling、and testing of Chunhui gas control systems, we strictly implement the company inner-control standards with much high requirements. In order to ensure the product safety and reliability, the technical targets (outlet pressure、safety relief pressure、slam-shut pressure) will be completely tested, as well as the fatigue test、airtight test、pressure keeping test all complying with all national regulations , EN334 and PED 97/23/CE.