American Society for Testing thiab Materials, ASTM. Yav tas los hu ua International Association for Testing Materials (IATM). American Society for Materials thiab Testing (ASTM) tam sim no yog ib lub koom haum loj tshaj plaws kev tsim kho hauv ntiaj teb thiab yog lub koom haum ywj pheej tsis muaj txiaj ntsig. ASTM muaj ze li ntawm 34,000 tus tswvcuab, txog 4,000 ntawm lawv los ntawm ntau pua lub tebchaws sab nraud Tebchaws Meskas. ASTM tau tsim ntau tshaj 10,000 tus qauv.

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