(1)Brief introduction: "Wodi" polyethylene fiber waterproof membrane is made of macromolecule materials (raw material) such as polyethylene, highstrength polypropylene nonwovens, black masterbatches, anti-aging agent, etc. These materials are physically and chemically processed and compounded by automatic production line at one time. The Polyethylene fiber waterproof membrane uses polyethylene waterproofing layer as middle layer, strong bonding layers as up-down sides layers, and it is one of the best waterproof materials at home and abroad. It is green product, innocuity, insipidity, non-pollution, high tensile strength, strong impermeability, good softness, small liner expansion coefficient, uniform surface roughness, large friction coefficient, light weight and low cost. Implemented standard: Chinese standard GB18173.1 2000 (2)Specification: Table: Specification Item Specifications Allowable deviation % Length ,(mm) 1000 500 Not allowable negative value Width ,(mm) equal or more than 1200 equal or more than negative 1 Weight ,(g/square meter) 280,300,400 500,600,700,950 negative 10 to 15 (3)Application It is applicable for construction roof in waterproof, underground project moisture-resistant, dam anti seepage, pond and canal, and anti pollution and anti seepage of chemical and metallurgical engineering. It can be bonded directly with cement and other materials in the solidification process. The construction method is simple, and under room temperature. Its useful life is 50 years or more.