American Society yekuedza uye zvigadzirwa, ASTM. Yaimbozivikanwa seyenyika yekudyidzana kwezvinhu zvekuyedza (Iatm). Iyo American Society yezvinhu uye kuyedza (ASTM) Parizvino iri imwe yematanho makuru ekuvandudza masangano epasi uye isangano rakazvimirira risiri-purofiti. Astm ine nhengo dzinenge 7,000, vanenge zviuru zvina kubva kumazana enyika dzenyika kunze kweUnited States. ASTM yakagadzira anopfuura zviuru gumi zvemitemo.

Hondo dzinodziya kune iyoDonghuang DHDZ Kufadzapakugamuchira iyoAstm Chitupa

ASTM, Donghuang Wind Simba, kunyanzvi mukugadzirwa uye kutengesa kwakasiyana siyana kwemaruva, Kukanganwira, Zvinyorwa zvakazara, zvinogona kuve zvakagadzirirwa zvichienderana nezvinodiwa nevatengi, vanogashira vatsva uye vekare vatengi kubvunza,

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