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Quartz powder is a powder material made from quartz ore through ultra-fine grinding, pickling purification and classification, with silica content ≥99.8%, whiteness ≥92%, and particle size customizable from 0.5μm to 100μm, divided into general quartz powder, electronic grade quartz powder and fused quartz powder. It has excellent chemical stability, resistance to acid and alkali corrosion (except hydrofluoric acid), and insulation resistance ≥10¹³Ω·cm. Electronic grade quartz powder is used for semiconductor packaging and photovoltaic wafer cutting, fused quartz powder for high-temperature resistant ceramics and precision casting, and general quartz powder as a functional filler for coatings and plastics, with core advantages of high hardness, high insulation and low expansion.