One side of the base is close to the wall or the surface of the board, which is generally not surface treated. You only need to look at the color of it to basically know what material is used; the connecting parts are basically surface treated, and only the following methods can be used; most of the functional parts are mainly tubular and rod-shaped raw materials. If the tube is inside, the inner wall can generally be seen. Since the specific gravity of the raw materials is different, the weights of the objects of substantially the same volume are different (the lightweight materials are out of the way). [Material of bathroom hardware] At present, the bathroom hardware pendants on the market mainly have the following materials: 1, stainless steel (there are relatively few such products on the market). Advantages: Not afraid of wear and tear, no rust. Disadvantages: single style, workmanship. 2, copper chrome plating (now on the market is basically based on such products, the rod is divided into hollow, solid two, electroplating is divided into two kinds of bright and frosted). (1), hollow copper chrome plating (mostly round rods, thick square rods are also generally): Advantages: more styles, moderate price. Disadvantages: fear of wear and tear, the best electroplating will also fall off in humid environment all the year round, some small manufacturers in order to lower the price, the plating layer is very thin, it will not take long to electroplating will fall off. Easy to deform, the regular manufacturers produce generally no such problem! However, some manufacturers use the tube to look thicker, but the wall is very thin, and the use is broken (it is recommended to press hard when buying, not easy to bend). (2), all copper solid chrome plating (generally square tube, some in order to prove that it is solid, specially twisted several flowers at both ends of the rod): Advantages: fine workmanship, thicker plating layer, strong and durable. Disadvantages: the price is high, the style is not as hollow as the one. 3. Aluminum alloy (or aluminum-magnesium alloy). Advantages: not afraid of wear, light and durable. Disadvantages: It may take a long time to use it. [How to choose bathroom hardware? 】 First of all, it is equipped from the shape and color. After selecting the style and color, you must first select the product material. The second is to look at the coating. In terms of materials, hardware pendants are available in copper, stainless steel, aluminum, alloys, and plastics. It is recommended that you buy copper accessories. The reason is very simple, the aluminum will oxidize, the alloy will rust, the plastic will deform, the stainless steel is really difficult to be stainless, but if it is a quality problem, stainless steel can not guarantee that it will not rust. Copper does not have these problems by good plating. Especially the base, moisture-proof and waterproof or copper. The hardest part of choosing a pendant is to look at the coating, because for the average consumer, the rough look is basically the same. Coating treatment is critical for copper pendants, which are related to product life, finish, and wear resistance. At the same time, the coating treatment is also the biggest cost except copper embryo in the process of making copper pendants. The specific plating process is not much to say. So how do you judge the quality of a copper key coating? A good coating is black and shiny, with a moisturizing feel, while a poor quality coating is dull. The good coating is very flat, and the inferior coating looks carefully and the surface has undulating undulations. There are also depressions on the surface that are definitely inferior products. A good coating is more wear-resistant, and the samples put out by the merchants in the store are wiped every day. The surface of the good product is basically scratch-free, and the surface of the inferior product will have dense scratches. [Bathroom hardware to see and hear three methods] First, look: bathroom hardware is often used frequently, first look at the plating is good, in general, the brighter and more delicate the surface, the more obvious the mirror effect, the better the coating process; see the material color, chrome exquisite look, There is also a mirror effect, the color of stainless steel and alumina hardware is less, and the copper chrome-plated bathroom hardware has become the mainstream of the market. The chrome plating is not as simple as plating a layer of chrome on the surface. Considering the dampness of the bathroom environment, the bathroom hardware is often subjected to multi-layer plating to resist corrosion and oxidation. Copper hardware is the most expensive, copper and zinc alloy hardware is moderately priced, and the price of stainless steel and alumina hardware is somewhere in between. Second, listen: listen to the introduction of the product, mainly for the introduction of the coating, good bathroom hardware not only experienced the previous grinding, polishing, dust removal, but also as many as six or seven layers of nickel and chrome plating process, The more the coating, the better the quality; Third, touch: You can use the grip method to see the quality of the material, some merchants will use the cast iron material to impersonate all copper or copper-zinc alloy hardware, hold the hardware after two or three seconds to loosen, the fog and traces will quickly disappear. It can be judged to be copper. If the fog and traces are not scattered for a long time, it is very likely that the material is not copper. 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