ISO 17075-1 Leather -- Chemical determination of chromium(VI)
求ISO 17075-1Leather -- Chemical determination of chromium(VI) content in leather -- Part 1: Colorimetric method多謝
有一个DIN EN ISO 的
http://bbs.cnfzjc.com/thread-22877-1-1.html http://bbs.cnfzjc.com/forum.php?mod=viewthread&tid=23739&extra=page%3D1&_dsign=daa469d6
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