Wollastonite powder is also named grammite powder,needle wollastonite powder, Short fiber silica fume, Structural Formula: CaSiO3. wollastonite is a calcium silicate mineral, white Crystal structure is fine granular.
 As a substitute for asbestos in friction products, insulating board and panels,paint,  plastics, and roofing products, wollastonite is resistant to chemical attack, inert,stable at high temperatures, and improves flexural and tensile strength. Tangshan Hanwei is a Chinese good Wollastonite supplier, especially for friction material application.
Usage: Mainly used in friction materials,ceramic,coating, paper making, plastic, rubber and so on.