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DE?? ???????
?? 16??? ?? ???????? ??? ??? ??.
?? ???? ?? ???????? ??? ??? ??? ????: ?? ? ?? ??, ?? ??, ?? ? ?? ?? ??.
National Metrological Verification Regulations of the People's Republic of China, ?? ???????
Professional Standard - Machinery, ?? ???????
國家市場監督管理總局、中國國家標準化管理委員會, ?? ???????
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???????
國家能源局, ?? ???????
Professional Standard - Petroleum, ?? ???????
機械工業部, ?? ???????