The keychain is very common in our daily life. It is exquisite and compact, with various shapes. It can match your own key with your favorite keychain, which not only reflects your personality and taste, but also brings more to our daily life. Pleasant mood. Let's take a quick look at this product. First, the key ring production materials. Metal keychains include brass, white iron, zinc alloy, stainless steel, etc. Among them, the keychain made of copper is the most expensive, and it is relatively cheaper to make with iron. The keychain made of metal is generally surface treated, electroplated with titanium, zinc, copper, nickel, chrome, gold, tin, silver, etc.; electroplated alloys are: zinc alloy, tin alloy, copper alloy, etc., which can increase Its aesthetic effect can achieve the effect of rust and imitation wear. Second, the shape of the keychain. As a kind of ornament hanging on the key ring, the keychain has many shapes, such as cartoon shape, brand shape, simul...
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