Jina la bidhaa karanga size m1-m16, au isiyo ya kawaida kama ombi na vifaa vya chuma, chuma cha alloy, chuma cha kaboni, shaba, alumini na kadhalika daraja 4.8,8.8,10.9,12.9.Etc Standard GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS nk. Uthibitisho wa mahitaji ISO9001, IATF16949, ISO14001, nk