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DE?? ??? ??
?? 12??? ?? ??? ??? ??? ??? ??.
?? ???? ?? ??? ??? ??? ??? ??? ????: ??, ?? ??, ?? ??, ?? ? ??, ???, ??????, ??.
Professional Standard - Urban Construction, ?? ??? ??
Jiangsu Provincial Standard of the People's Republic of China, ?? ??? ??
Group Standards of the People's Republic of China, ?? ??? ??
Canadian Standards Association (CSA), ?? ??? ??
Underwriters Laboratories (UL), ?? ??? ??
American National Standards Institute （ANSI), ?? ??? ??