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?? 4??? ??? ???? ??? ??? ??.

?? ???? ??? ???? ??? ??? ??? ????: ?? ??, ???, ??? ? ???, ?? ???, ??? ? ???.

Gosstandart of Russia, ??? ???

• GOST 14839.2-1969 ??? ??? ????? ??? ?? ??

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ???

• GB/T 16071-1995 ??? ?? ? ??? ??? ??? ?? ?? ?? ?? ??????? ??

Taiwan Provincial Standard of the People's Republic of China, ??? ???

• CNS 7922-1981 ??? ? ???? ?? ?? – ???? ??? ???? ???

Group Standards of the People's Republic of China, ??? ???

• T/CSTM 00454-2021 ?? ? ??? ??? ? ??? ???? ?? ??

??:   ???, ?????, ??? ??, ??? ??, ?? ???, ??? ??, ??????, ??????, ?? ???, ??? ??, ?? ???, ??? ???, ??? ??, ??? ???, ??????? ???, ??? ???, ?????, ??? ??, ????.