Phenolic Resin manufacturer / supplier in China, offering Liquid Silica Sol for Precision Casting Refractory Materials, Alkaline Silica Sol Binder with 30% Solid Content, Hollow Glass Microspheres with Low Density of 0.15-0.6g/Cm ³ and High Strength of 5000-18000psi Are Used as Insulation and Lightweight Fillers for Composit and so on.