The roof rainwater drainage system of the villa is also called the roof rainwater drainage system. It is composed of Roof Gutter, rainwater pipe and related components. It can effectively collect roof rainwater and efficiently drain rainwater away from the building in an organized way Thus, it can protect the outside production surface and the foundation of the house, prolong the service life of the building, and play a certain decorative and aesthetic effect. From the material, there are two kinds of water falling system: PVC Villa Water Falling System and metal villa water falling system. The metal water falling system has been widely used in North America and Europe for half a century. Since 2005, it has been introduced into the domestic market, because it is more durable and beautiful Convenient installation, cost-effective, has become one of the necessary building materials for domestic high-grade villas. DEYU building materials metal water system as the water system for Villa Industry Innovation Leader has seven years of qualification, professional manufacturing, cost-effective advantage, continue to contribute to the development of the industry.