China Powder Network News 1. The air pressure of a fully inflated tire will become smaller after a while. If there is a problem with the valve or inner tube, it may be due to the tiny permeability of the inner tube. You can unplug the valve core, roll a small funnel with cardboard, insert it into the valve, then pour a small spoonful of talcum powder into the inner tube, and then inflate it, so that it will not slowly deflate. 　2. People walk on the floor and the floor creaks. But if you sprinkle talcum powder into the cracks of the floor, the floor will stop making noise. 3. When storing the raincoat, line it with newspaper, sprinkle some talc powder, and then fold it for storage. The raincoat will not stick together after a long time.