We offer paper base petroleum asphalt roofing felt. This product is processed by making the paper base soaked in low-softening petroleum asphalt, then covered with high softening petroleum asphalt, and last coated with isolating mate rials such as talk powder. it is widely applied to the simple waterproofing, temporary-building waterproofing, building damp proofing, packing:as well as the single, multi-layers waterproofing of building roofs, underground facilities, water conservancy projects, etc.