ZH
EN
JP
ES
RU
DE??? ???
?? 4??? ??? ???? ??? ??? ??.
?? ???? ??? ???? ??? ??? ??? ????: ???, ??? ? ??? ??.
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ???
國家市場監(jiān)督管理總局、中國國家標準化管理委員會, ??? ???
American Society for Testing and Materials (ASTM), ??? ???