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Contact us for a free sample!!! Company Profile Product Description Item VT-8BH VT-12BM VT-19BH Whiteness(%) 93±3 88±3 95±3 Residue on mesh sieve(%) <0.01 <0.2 <0.5 Moisture(%) <0.5 <0.5 <0.5 PH 8-10 ...