Electronic-grade silica sol is a colloid of nano-silica particles (1-100nm in diameter) dispersed in water, with ultra-high purity (ppb level) and extremely low metal impurities.
It's a key material in semiconductor manufacturing. In chemical mechanical polishing, its uniform particles can smooth wafer surfaces to the nanoscale, directly affecting chip performance. It also enables ultra-smooth surfaces in LCD and high-precision optical lens production.
As chip processes advance, electronic-grade silica sol is developing toward more precise particle control, becoming an indispensable "invisible hero" in micro-manufacturing.