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DE?? ???
?? 13??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ?? ? ?? ???, ?? ??, ?? ?? ??.
Military Standard of the People's Republic of China-General Armament Department, ?? ???
Hebei Provincial Standard of the People's Republic of China, ?? ???
Group Standards of the People's Republic of China, ?? ???
Korean Agency for Technology and Standards (KATS), ?? ???
Japanese Industrial Standards Committee (JISC), ?? ???
Henan Provincial Standard of the People's Republic of China, ?? ???
Professional Standard - Petroleum, ?? ???