American Society for Testing and Equipment, ASTM. Poyamba ankadziwika kuti International Association for Testing Materials (IATM). Bungwe la American Society for Materials and Testing (Chithunzi cha ASTM) pakadali pano ndi limodzi mwamabungwe akulu kwambiri padziko lonse lapansi komanso ndi bungwe lodziyimira pawokha lopanda phindu. ASTM ili ndi mamembala pafupifupi 34,000, pafupifupi 4,000 mwa iwo ochokera kumayiko mazana ambiri kunja kwa United States. ASTM yapanga miyezo yopitilira 10,000.

Zabwino zonse zikomo kwaDonghuang Zithunzi za DHDZpa kulandiraChizindikiro cha ASTM

Astm, donghuang mphepo mphamvu, okhazikika kupanga ndi malonda specifications zosiyanasiyana zaflanges, zojambula, specifications wathunthu, akhoza makonda malinga ndi zofuna za makasitomala, kulandira makasitomala atsopano ndi akale kukambirana, mbiri khalidwe ...

mawonekedwe: ShanxiDonghuang Wind Power FlangeMalingaliro a kampani Manufacturing Co., Ltd