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STU is one of the leading testing & certification organizations and pioneer in the product testing and certification industry in worldwide. STU has been accredited by China National Accreditation Service for Conformity Assessment (CNAS) ＆China Metrology Accreditation (CMA), and also accredited by US Consumer Product Safety Committee(CPSC), and recognized by International laboratory accreditation cooperation(ILAC); meanwhile accredited by Worldwide System for Conformity Testing and Certification of Electrotechnical Equipment and Components (IECEE).
 
STU focus on electronic and electrical consumption product, mechanical safety, chemical testing, gas product, toy, Textiles (clothing, footwear),automobile part testing, Civil Aircraft Landing Gear, accessory and engine borescope testing, the NDT testing for boilers and pressure vessels safety , construction steel parts, medical devices, packing, shipment, environment, reliability, food analysis/microbiology, solar product, building material and bathroom material, fitness equipment in different industries. We also offer China Compulsory Certification (CCC), international exchange certificates, Pre-shipment Inspection (PSI), training and quality management systems services.