QDGF-G25

high-purity silica powder features SiO₂ content up to 99.998%, the highest purity grade in the series. Its D50 particle size is 25.5μm. It delivers low dielectric loss, low linear expansion coefficient and excellent insulation performance. With ultra-high purity, coarser particle size and excellent filling efficiency, it is the top-grade filler for ultra-high-end electronic packaging substrates, high-frequency 5G materials and precision optical ceramics.