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DE??? ???? ???
?? 20??? ??? ???? ???? ??? ??? ??.
?? ???? ??? ???? ???? ??? ??? ??? ????: ?? ??, ?? ? ???? ?? ??, ?, ??, ?? ??, ??, ?? ? ???? ??.
Professional Standard - Chemical Industry, ??? ???? ???
Hebei Provincial Standard of the People's Republic of China, ??? ???? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ???? ???
British Standards Institution (BSI), ??? ???? ???
Japanese Industrial Standards Committee (JISC), ??? ???? ???
Association Francaise de Normalisation, ??? ???? ???
National Metrological Technical Specifications of the People's Republic of China, ??? ???? ???
RU-GOST R, ??? ???? ???
German Institute for Standardization, ??? ???? ???
American Society for Testing and Materials (ASTM), ??? ???? ???
GOST, ??? ???? ???