GB/T 22807-2019皮革和毛皮化学试验六价铬含量的测定:分光光度法标准
英文:Leather and fur—Chemical tests—Determination of chromium(VI) content:Colorimetric method GB/T 22807-2019介绍: 国家标准《皮革和毛...
英文:Leather and fur—Chemical tests—Determination of chromium(VI) content:Colorimetric method GB/T 22807-2019介绍: 国家标准《皮革和毛...