Silica and sodium fluoride use? 
Sodium fluoride is used as a phosphating accelerator in the coating industry to stabilize the phosphating solution, refine the phosphating, and improve the performance of the phosphating film. In the phosphating of aluminum and its alloys, the al3+, which has a very harmful negative catalytic effect, is closed, so that the phosphating can proceed smoothly. Wood preservatives, agricultural pesticides, brewing fungicides, pharmaceutical preservatives, welding fluxes, alkaline Zinc salt galvanizing additives and enamel, paper industry, etc.

Silica is mainly used in colored rubber products to replace carbon black for reinforcement to meet the needs of white or translucent products. Silica also has super adhesion, tear resistance and heat resistance and anti-aging properties, so it can also replace part of carbon black in black rubber products to obtain high-quality rubber products, such as off-road tires, engineering tires, Radial tires, etc. Silica can also be used in plastics (to improve processing properties), papermaking, coatings, pesticides, etc.