Our Company Provide High Purity and Quality Product with Best Services. All Inquiries are Welcome. Brief Introduction of Our Products WollastoniteThe formula of Wollastonite is CaSiO3. The ideal chemical specifications are as followed:SiO2 51.75% ,CaO 48.25%,Heated-Swelling,Coefficient:6.5×10-6°C-1,Moh’s Hardness 4.5-5.0,Density 2.8,melting Point 1540°C,Refraction Index 1.62 ,The actual chemical ...