and the green tire field is its largest demand end

​​​​Silk black is the general name for white powdery X-ray amorphous silicic acid and silicate products. Highly dispersed silica (HDS), also known as highly dispersed silica, refers to an inorganic silicon compound with high dispersion and no dust. Compared with traditional silica, highly dispersed silica has the characteristics of narrow pore size distribution, good chemical…