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DE??????
?? 28??? ??????? ??? ??? ??.
?? ???? ??????? ??? ??? ??? ????: ????, ????, ??.
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??????
Group Standards of the People's Republic of China, ??????
Chongqing Provincial Standard of the People's Republic of China, ??????
Military Standard of the People's Republic of China-General Armament Department, ??????
CO-ICONTEC, ??????
Professional Standard - Light Industry, ??????
CN-STDBOOK, ??????
US-FCR, ??????