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Professional Standard - Machinery, ?? ??? ????

National Metrological Verification Regulations of the People's Republic of China, ?? ??? ????

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ??? ????

GSO, ?? ??? ????

American National Standards Institute (ANSI), ?? ??? ????

German Institute for Standardization, ?? ??? ????

CZ-CSN, ?? ??? ????

國家質量監督檢驗檢疫總局, ?? ??? ????





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