... industry additives, for plate glass polishing materials ( has been extended to optical glass, optical lens, tube grinding,bleaching, clear, glass UV ... . For anti-reflective glasses lenses agent, and CE made of titanium yellow to pale yellow glass. 3. Used in ceramic glazes and ... % Y2O3/REOU≤ 0.01% Pr6O11/REO ≤ 01% Handling: 1.Try to reduce the dust emission in the air, such as by ...