... ,our hydrophobic silica(white carbon black)are widely used in rubber, plastics... Precipitated silica(White carbon black)1), LS-199MAIN ... agent and paintings, coatings,etc. Also applied in High-transparent rubber products and shoes soles.2), LS-299 MAIN CONTENT SiO2 ... is mainly used in tyre, also applied in half- transparent multicolorrubber shoes soles and products Packing:Mainly packed in 20kgs ...