Asphalt felt paper is mainly used as an isolation layer and temporary protective layer material in waterproof construction to prevent damage to the finished waterproof layer during construction. It is widely used for waterproofing and moisture-proof treatment of roofs, basements, walls, floors and other parts. In addition, oil felt paper can also be used for moisture-proof protection of pipe galleries, packaging materials, and the lower layer of multi-layer waterproof layers. Oil felt paper should be stored in a dry and ventilated environment, avoiding direct sunlight and rain. During transportation and storage, care should be taken to prevent damage or deformation.