99啪99精品视频在线观看,久久久久免费一区二区三区,久久中文字幕爱爱视频,欧美日韩国产免费一区二区三区


ZH

EN

JP

ES

RU

DE

? ??

?? 34??? ? ??? ??? ??? ??.

?? ???? ? ??? ??? ??? ??? ????: ?? ?? ???, ??? ? ???, ???, ????, ????, ?? ??, ?? ??, ?? ? ?? ??, ?? ? ???? ??, ?, ?, ??, ??, ??, ?? ?? ? ??, ??? ?? ??.


國(guó)家市場(chǎng)監(jiān)督管理總局、中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì), ? ??

SCC, ? ??

PL-PKN, ? ??

RU-GOST R, ? ??

Association Francaise de Normalisation, ? ??

(U.S.) Ford Automotive Standards, ? ??

Japanese Industrial Standards Committee (JISC), ? ??

British Standards Institution (BSI), ? ??

ET-QSAE, ? ??

Professional Standard - Non-ferrous Metal, ? ??

Korean Agency for Technology and Standards (KATS), ? ??

KR-KS, ? ??

German Institute for Standardization, ? ??

American Society for Testing and Materials (ASTM), ? ??

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ? ??

European Committee for Standardization (CEN), ? ??

SE-SIS, ? ??

American Gear Manufacturers Association, ? ??

ESDU - Engineering Sciences Data Unit, ? ??

Lithuanian Standards Office , ? ??

Danish Standards Foundation, ? ??

AGMA - American Gear Manufacturers Association, ? ??





?2007-2024 ??? ??