1, in the purchase of the faucet should be noted that if the imported brands of faucets, has imported the product description. If the domestic brands have product certification, and indicate the origin and address. When you purchase the key depends on feeling, flip the switch to feel soft, effortless, as laborious or overly astringent feel buoyant, it shows bad assembly structure. Do not blindly recognize only the purchase of low-cost, mass times the lowest faucet rust, short life. Buy quality assured faucet should try to store. Different prices faucet there are differences in the quality of the plating. In general, the main raw material of recycled copper and copper taps into more advanced nickel-copper composite material. Because they do not readily corrode copper oxide, after repeated polishing, it is conducive to electroplating, plating Copper is relatively better quality. In addition, the plating thickness is very particular, a number of smaller, poor equipment, technical strength is not strong small domestic manufacturers of faucets, plating thickness of only 3-4 microns, and the thickness is easily oxidized corrosion. In this regard, the quality of imported taps plating is more secure. It is understood that, at present, the international standard faucet plating thickness of 8 microns, preferably up to 12 microns. The quality of the tap factors in addition to raw materials, production procedures and process models also played a decisive role. Developed countries have grown out of labor-intensive production model, replaced by mechanized large-scale production. For example in the casting process, some domestic enterprises are still using traditional sand casting, resulting in products appear inevitable casting defects. While developed countries use induction furnace and gravity casting machine combination of casting, not only products of good quality, the passing rate, and its efficiency is several times or even several times manually operated. In the machining process, most domestic factories using the biaxially instrument lathe and machine tools for processing, multiple clamp the workpiece, often resulting in greater product form and position tolerances. While developed countries use professional multi-station machine for machining workpieces, workpiece clamping can be completed once all the workpiece, product shape and position tolerances are very small, the function has also been a strong guarantee.