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DE??? ????
?? 5??? ??? ????? ??? ??? ??.
?? ???? ??? ????? ??? ??? ??? ????: ?? ? ?? ??, ?? ??.
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, ??? ????
國(guó)家市場(chǎng)監(jiān)督管理總局、中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì), ??? ????