Silicone Oil, Polysilazane, Precipitated Silica manufacturer / supplier in China, offering High Temperature Lubricat Phenyl Methyl Silicone Oil Iota 255 CAS No. 63148-58-3, Pre Crosslinked Polysilazane /Iota 9n0901/Silicone Oil, Methyl Polysilazane Iota 9n1501 Used for Preparing Emulsified Defoamers and so on.