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DE?? ???
?? 36??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ?? ??, ??? ??.
Guangdong Provincial Standard of the People's Republic of China, ?? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???
Professional Standard - Chemical Industry, ?? ???
CZ-CSN, ?? ???
Group Standards of the People's Republic of China, ?? ???
Bureau of Indian Standards, ?? ???
IN-BIS, ?? ???