We are offering chromium sulphate All leather and fur tanning and the main retanning, espacally yin high-grade leather tanning. Item of analysis Typical specification CATEGORY I CATEGORY II CATEGORY III CR2O3 24-26% 21-23% 21-23% ALKALINITY 33 ± 1% 40 ± 1% 33 ± 1% IRON (FE) CONTENT 0.1%MAX WATER INSOLUBLE 0.1% MAX
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