Silicone Oil, Polysilazane, Precipitated Silica manufacturer / supplier in China, offering Phenyl Methyl Silicone Oil Iota 556 (Phenyl Trimethicone), High Activity Organic Polysilazane Iota 9150K Applied to Various Types of Substrates, Low Viscosity Organopolysilazane Iota 9150 Various Curing Methods and so on.