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We are Nantong Kingway Complex Material Co., Ltd. Our company is in Nantong, Jiangsu, near Shanghai city. Our roofing membrane is a three layer highly breathable, fully waterproof membrane, constructed from high tensile spun-bonded polypropylene layers, around a microporous PE film. The outer layer forms the functional waterproof surface, the middle layer is the breathable waterproof membrane, and the inner layer protects the membrane from abrasion and damage, also giving additional strength. This enables the fabric to allow moisture vapour to pass through, whilst remaining fully waterproof. Our products are waterproof and breathable or heat insulation. They are widely used in construction for roofing felt and underlay. Our products are in good quality and low price, because we manufacture it ourselves. We have customers from UK, US, UA, Italy, Greece, New Zealand, Germany, and so on. Please find our offer as follows: Waterproof and high breathable products Material: PP nonwoven coated with PE breathable film Water resistance: 5000mm Breathable: 2300G/M2/24hours Tensile strength: MD 240N/CD 170N Weight: 135G/M2 UV resistance: 4 months Width: 1.5m, Length: 50m as your requirement. Packing: In roll in LDPE bag. Colour: As your requirement. Also we have some heat insulation membrane for roof We are the manufactory in China. Hope you are interested in some of our products.