We do filling. The glass beads we purchased before had uneven particle size, and large particles scratched the surface of the product. What is the particle size tolerance you can control within?

We particularly understand your concerns! Our factory uses air flow classification, and the particle size tolerance is strictly controlled within ±5μm (for example, for a 100μm specification, the actual range is 95-105μm), without any super-large particle impurities. We can also customize screen filtration according to your needs to ensure that there is no risk of scratches on the product surface.