PANZHU WRAP Waterproof Membrane Enhanced HP-F49 PANZHU WRAP Waterproof Membrane is made of three layers by hot pressing process.Outer protective layer, middle functional layer and inner protective layer. Hot pressing technology ensures the products to have a good air permeability and durability.It is now one of the most advanced breathable membrane technology.The permeability of the product can reach 1000-1500g/ã?¡.24h, which achieves the European standard.We can also design different solutions for customers from different zone areas.