GB/T 38407-2019皮革和毛皮化学品铬鞣剂中六价铬及还原性的测定标准
英文:Leather and fur chemicals—Determination of chromium (VI) and the reductive potential for chromium tanning agents GB/T...
英文:Leather and fur chemicals—Determination of chromium (VI) and the reductive potential for chromium tanning agents GB/T...