Solution: Using our industrial alum (Purity 99. 2% Min, Granule Size: 30-70Mesh) as coagulant, combined with flocculation process, with arecommended dosage of 60-90ppm.

Solution: Using our food-grade alum (Purity 99.6% Min, White Crystalline Powder) as a mordant to assist dye fixation, with a soaking concentration of 3.5%-4.5%.

Solution: Using our food-grade alum (Purity 99.6% Min, White Crystalline) for traditional tanning and degreasing treatment, with a controlled concentration of 6%-7%.

Solution: Adding our industrial alum (Purity 99.2% Min, Powder Size: 120-180 Mesh) as a sizing aid to the pulp, with an addition ratio of 0.35%-0.45%.