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?? 3??? ???? ? ???? ???? ??? ??? ??.

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

SCC, ???? ? ???? ???

• CAN/CGSB-106.2-M91-1991 ????? ???? ?? ????? ??? ???? ??(??? ?/?? ???)

Korean Agency for Technology and Standards (KATS), ???? ? ???? ???

• KS J 4203-2008 ???? ??????? ???? ??

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

• T/CGSS 013-2020 ??? ?? ????? ??? ??? ?? ??

??:   ???? ? ???? ???, ???? ???? ???.