HYST has a fully functional laboratory approved by China National Accreditation Service and establishes laboratory quality system according to ISO / IEC 17025. The items approved by CNAS include 15 inspection items with 103 inspection specifications and 9 calibration items with 8 calibration specifications, covering four professional fields of material testing, chemical analysis, NDT and calibration. The lab, with its advanced equipment, mainly carries out physical and chemical property testing of steel material, H2S resistance testing, full-size property testing for casing and tubing, testing analysis of creep and stress-rupture properties at high temperature and metering and calibration, capable of fulfilling the functions of inspection & testing, R&D and analysis.