According to information, general hardware accessories mainly copper, alloy, stainless steel and iron four components, the price also are very different. At present domestic outfit use most is a stainless steel hardware, but stainless steel material not pure, easy to exist disadvantages such as print out the stains, with many families began to use aluminum alloy material accessories. According to industry insiders revealed that the market a few businessmen claims of aluminum material actually just consist of aluminum alloy material composition, aluminum alloy material including mixing with a silicon, magnesium and other components, different aluminum alloy material and surface film thickness and surface treatment technology has the very big relations, these factors affect the price of material often and quality. Some enterprise of managers said, surface treatment technology includes oxidation, grinding, electroplating, wood grain and paint and so on, the product price is very big, to move the door frame for patients, the oxidation process of the product market grind arenaceous average price in every square metre 180 yuan, and the plating of products reach the every square metre 260 yuan, the price is nearly 45%.
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