Yintoni i-ANSI, ISO, NE-ASTM imigangatho yeebheringi?Imigangatho yobuchwephesha, njengemigangatho ye-ASTM yeebheringi ezichaza ukuba yeyiphi iresiphi yentsimbi ekufuneka isetyenziswe, inceda abavelisi ukwenza imveliso engaguqukiyo.Ukuba ukhangele iibheringi kwi-intanethi, mhlawumbi uye wadibana nemveliso...
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