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DE????? ?? ??
?? 12??? ????? ?? ??? ??? ??? ??.
?? ???? ????? ?? ??? ??? ??? ??? ????: ?? ??, ???, ?? ????, ?? ??.
Taiwan Provincial Standard of the People's Republic of China, ????? ?? ??
Professional Standard - Urban Construction, ????? ?? ??
British Standards Institution (BSI), ????? ?? ??
Professional Standard - Chemical Industry, ????? ?? ??
American Bureau of Shipping , ????? ?? ??
American Society for Testing and Materials (ASTM), ????? ?? ??