mica biotite flake 1.size:20~1000mesh 2.usage:decoration 3.shape:block,flake,powder Packaging & Delivery:1. Packaging Detail : 25kg/bag or as customers request2. Delivery Detail: within 7-15 days after receipt of prepayment Specifications:mica biotite flakeblack sheets usage: rubber,coating,paint,decorate shape:flake,sheet1. Chemical Compositions: SiO2Al2O3 Fe2O3 Ca OMg OK2ONa2O44.3%31.2%5.74%0. ...