Each inspector of Shanghai Zhangyang Testing Technology Service Co., Ltd. is on duty after rigorous professional training. For containers, including ISO tanks, railway locomotives, trucks, parts, steel structures, freight containers (bulk, refrigerated, tanks), Trailer chassis, port machinery, refrigeration machinery, portable power equipment and battery manufacturing, professional training, quality monitoring and inspection have many years of rich inspection experience, our inspection services cover all production processes: including material inspection, steel pretreatment, partial installation, All links including final assembly, painting, completion, testing, offline, acceptance, and signing on behalf of customers.