... 99%min 3.Good quality and more competitive price Potassium Fluosilicate 98% white powder for wood preservation, ceramics ... , aluminum and magnesium smelting, optical glassPotassium Fluosilicate,Potassium Silicofluoride 98.5% white powderMainly used for For ... ceramics, aluminum and magnesium smelting, optical glass, and manufacturing potassium chlorateSpec:Main content: 99% minHF: 0.05% maxFe ...