SS-630L Silica matting agent Silica dioxide powder is the key composition in producing elastic coating. Cuase silica powder can provide hardeness, flexibility and durability in elastic coating. High quality silica dioxide powder is essential material in elastic coating. So when choosing high quality silica dioxide powder, we should consider several important factors as below. 1) Purity: when the silica dioxide powder has higher purity, it will also has better performance and consistency of the powder during the manufacturing process. 2) Particle size: silica dioxide powder's particle size is super important to elastic coating which can decide the matting effect in coating directly. 3) Surface area: silica dioxide powder's surface area will effect the elastic coating's reactivity and dispersion. 4) Chemical component: silica dioxide powder can be modified by various additives or surface treatments to improve the compatibility with different polymers in elastic coatin…