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DE?? ???? ??
?? 11??? ?? ???? ??? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ??? ????: ?? ??.
CZ-CSN, ?? ???? ??
Professional Standard - Machinery, ?? ???? ??
國家市場監(jiān)督管理總局、中國國家標準化管理委員會, ?? ???? ??
Group Standards of the People's Republic of China, ?? ???? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???? ??
Professional Standard - Petrochemical Industry, ?? ???? ??