In UPR products, fume silica gives high transparency and good physical properties even at a low concentration. This improves quality of its down-stream product.

In gel coat resin, fumed silica improves its many properties, mainly tensile strength, bending resistance, water resistance, heat resistance, and prolongs its service life; in thixotropic resin, fumed silica provide excellent thixotropic properties ; in putty, fumed silica shows great anti-settling thixotropic performance.