ZH
EN
JP
ES
RU
DE?? ?? ??
?? 16??? ?? ?? ??? ??? ??? ??.
?? ???? ?? ?? ??? ??? ??? ??? ????: ?? ??, ??? ? ? ?? ?? ??, ??, ?? ??, ???, ??????, ??.
Shaanxi Provincial Standard of the People's Republic of China, ?? ?? ??
Shandong Provincial Standard of the People's Republic of China, ?? ?? ??
中華人民共和國國家質量監督檢驗檢疫總局、中國國家標準化管理委員會, ?? ?? ??
Guizhou Provincial Standard of the People's Republic of China, ?? ?? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ?? ??
Hebei Provincial Standard of the People's Republic of China, ?? ?? ??
Group Standards of the People's Republic of China, ?? ?? ??
Professional Standard - Building Materials, ?? ?? ??
Professional Standard - Coal, ?? ?? ??
工業和信息化部, ?? ?? ??