This product is a single-terminated trimethoxyl-terminated silicone oil with a uniform composition and no ring body. The product contains active single-ended trimethoxylsilane. When used to treat inorganic powders, one end of the silicone oil chain reacts and the other end of the inert group hangs. Therefore, it can provide better compatibility and interface between inorganic fillers and silicone resins, silicone rubbers, etc. Stability, silicone oil does not dissociate or precipitate.