Gutter system (or finished gutter system) can be organized rationally discharge rainwater from the building and to prevent the roof, walls and foundation damage, which is a modern villas and multi-storey buildings will be selected products. Finished Cailv gutter system (or Cailv the water system) is widely used in the United States and Europe, its shape mainly K-type and two continental semicircle HALFROUND. K-type gutter from the United States, because of its cross-sectional shape of the letters K and named; it is a semi-continental Gutter both ancient and modern gutter form, simple shapes and fluid drainage performance makes it finished gutter System classic. Color: white, ivory, clay-colored, brown, Europe brown, bronze black (customizable) cornice: 5 inches, 6 inches, 7 inches (customizable) K-shaped aluminum gutter water system for its hyperbolic appearance long life, easy to install, and other advantages in the United States and Canada been widely used. According to AAMA (American Builders Association) statistics, over 90 percent of US households use K-shaped aluminum gutter water system. 5 inches K-shaped gutter water system is mainly used for houses and small businesses (public) buildings. 6 inches, 7 inches K-shaped gutter water system is mainly used for villas, multi-storey apartment and medium-sized businesses (public) buildings. Color multi-curve design: gutter cross-section of North America's most popular K-Snap multi-curve, the water pipe is used with a corrugated rectangular compact design; high cost: the force components of metal products, a substantial increase in security forces, and configure more less an overall reduction in the total cost, more cost-effective; easy to learn and easy to install: small parts, installation learn, natural and reliable connection between the parts; in a residential appearance, for a three-dimensional effect of the impact Cailv the water system, like the exquisite accessories for clothing wearing affect the results of the same. The water system attaches great importance to its visual design on a variety of backgrounds with facades, its multi-curve pattern design vertical appearance, bringing a new visual impact experience modernist, avant-garde fashion to meet specific design requirements of the building facade .