??????? Zhengxin Non-destructive Testing Co. Ltd., owned by the Company, has the qualification of "Non-destructive Testing Organization Level-C" and "Radiation Safety Permit" approved by the General Administration of Quality Supervision and “Certificate of HSE” The company has 30 employees , more than 30 specific machines like γ- detector and various physical and chemical testing to fulfill the requirements. In recent years, it has carried out non-destructive testing of pressure vessel manufacturing and installation in PE, Refinery in Qilu Petrochemical and acrylonitrile unit in Dongying City, and started the services in Shandong, Anhui and Inner Mongolia, Tianjin Hainan. Film pass rate has reached at above 97% of 600,000. The market is expanding and this has been trusted by customers.