Metal water system features: metallic for the construction brings a strong performance. Choose different colors, giving the designer with a broad imagination. And the building itself shows the natural color with the atmosphere of the building. Cailv not oxidized, it is because the surface of aluminum will form invisible oxide film. Cailv polyester coating surface, can ensure it remains beautiful qualities in cold temperature, acid rain, salt corrosion and other harsh weather conditions changing. Due to the low proportion of aluminum-magnesium alloy, with metal hooks, so gutter force safe, reliable, easy to learn and easy to install. Can be recycled, in line with the requirements of the national green building. Impact test dropped from a height 500mm diameter 15mm mass of 500 g ball. No peeling bending experiment at room temperature slowly by a hand press at 180 ° bending test. No peeling no cracks salt corrosion experiments were cross-cut with a cutter to just touch the aluminum sheet date, at 35 degrees / C conditions, 5% salt solution spray 360 hours. Trace the spread of rust from not more than 2mm incision acid etch test 10% HCL, CHCOOH, H2SO4 experiment 100 hours. No change in the surface temperature of the experiment in the Arctic cold of minus 50 degrees and hot equatorial sun exposure over a metal water system performance stable condition at 60 degrees in the North American and European markets fell into the total market of 80%, metal water system materials including galvanized iron colored aluminum, zinc alloy and high-end brass; which Cailv the water system with its color effects, excellent weather resistance and relative economy accounts for more than 90% market metal water system. Our domestic market is common pouring cement and PVC gutter gutter before, but these products due to their own shortcomings, such as cement gutter due to geological changes over time can lead to leakage from the crack, PVC gutters because it is plastic material, poor UV resistance, thermal expansion and contraction changes, leading to short life shortcomings. It is in this context, the introduction of European and American popular song associated metal drowning technology, combined with domestic characteristics, launched Cailv gutter. Aluminum oxide film formed on the surface layer of invisible, no aluminum oxide, this self-protective aluminum with high corrosion resistance; secondly aluminum substrate surface covered with colored polyester coating, color stability ; coefficient of thermal expansion coefficient and cement grassroots aluminum close third (PVC and cement grassroots larger thermal expansion coefficient difference), and not in Cailv the water system after use, causing cracks and risen, resulting in leakage; while aluminum at temperatures between -45 ° to 260 ° C, strength and performance of the same; it can in cold regions such as the Northeast China, southern China, such as the sun and strong resistance, such as under large temperature changing China's Xinjiang and other inclement weather use; ensure lasting as new. FIH metal drowning is currently one of the few gas through artificial salt spray corrosion pitting phenomenon without any water system products. Because of the support of our customers, we believe we can become the most professional of the water system integrated solutions experts, the highest price of the roofing system products leader. Building Materials Co., Ltd. Hangzhou Ruichen