American Society rau kev sim thiab cov ntaub ntawv, ASTM. Yav tas los hu ua International koom tes rau cov ntaub ntawv xeem (IATM). American Society rau cov ntaub ntawv thiab kev sim (ASTM) Tam sim no yog ib qho ntawm cov koom haum txhim kho cov koom haum txhim kho hauv ntiaj teb thiab yog ib lub koom haum ywj pheej. ASTM muaj ze li 34,000 tus tswv cuab, kwv yees li 4,000 ntawm lawv ntau pua lub tebchaws sab nraud Tebchaws Asmeskas. ASTM tau tsim ntau tshaj 10,000 tus qauv.

Zoo siab ua tsaug rau covDonhuang DHDZ FORGINGINGSntawm tau txaisASTM Daim Ntawv Pov Thawj

ASTM, Donhuang cua fais fab tuag, tshwj xeeb hauv kev tsim khoom thiab muag khoom ntawm ntau yam kev qhia ntawmflanges, Zam txim, specifications ua tiav, tuaj yeem kho tau raws li cov neeg siv khoom, txais tos cov neeg siv khoom tshiab thiab cov neeg siv khoom qub, lub suab nrov zoo ...

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