1. 黄铜一铜锌合金

1. Brass copper zinc alloy

颜色随含锌量的增加而由黄红色变到淡黄色。黄铜力学性能比纯铜高，被广泛用于机械制造业中制作各种结构零件。 一般情况下不生锈也不会被腐蚀，塑性较好。

The color changes from yellow red to light yellow with increasing zinc content. Brass has higher mechanical properties than pure copper and is widely used in the mechanical manufacturing industry to make various structural parts. Under normal circumstances, it does not rust or corrode, and has good plasticity.

2. 青铜一铜锡合金

2. Bronze - Copper Tin Alloy

除锌镍外，青铜耐蚀性较好。

Except for zinc and nickel, bronze has better corrosion resistance.

3. 白铜一铜镍合金

3. White copper copper nickel alloy

分为结构铜镍合金和电工铜镍合金，结构铜镍合金力学性能高。

It is divided into structural copper nickel alloy and electrical copper nickel alloy, with high mechanical properties.

4. 紫铜纯铜常被称作紫铜

4. Pure copper is often referred to as purple copper

具有良好的导电性、导热性、耐蚀性、延展性好。可塑性较强被认为做铜门的材料。

Has good conductivity, thermal conductivity, corrosion resistance, and good ductility. Strong plasticity is considered a high-quality material for making copper doors.

紫铜门高雅古典，黄铜门时尚欧式。铜门选择哪种材料制作还要考虑建筑装修风格。如果比较古典中式还是用紫铜板比较合适,铝合金包装箱;如果很欧式的话建议采用黄铜板制作。

The purple copper door is elegant and classical, while the brass door is fashionable and European. The choice of material for making copper doors also needs to consider the architectural decoration style. If it is more classical Chinese style, it is more suitable to use copper plates and aluminum alloy packaging boxes; If it is very European, it is recommended to use brass plate for production.

在选购别墅铜门时，可通过一看、二问、三对比的方式判断产品真伪。一看即看色泽，紫铜是铜单质，具有玫瑰红色的金属光泽，表面形成氧化膜后呈紫色，故一般称为紫铜。光泽暗淡或者表面发黑的多为劣质材料;二问即向商家询问铜板的纯度、加工工艺，或向商家索取原料的检验报告等;三对比即可以货比三家，同类型的产品，过低的谨慎购买。总的来说在购买之时好向有经验的人请教，或是向正规机构咨询，避免上当受骗。

When purchasing copper doors for villas, the authenticity of the product can be determined by first glance, second inquiry, and third comparison. At first glance, the color can be seen. Purple copper is a simple copper substance with a rose red metallic luster. After the surface forms an oxide film, it turns purple, so it is generally called purple copper. Materials with dull luster or blackened surface are often of poor quality; The second question refers to asking the merchant about the purity and processing technology of the copper plate, or requesting the inspection report of the raw materials from the merchant; Three comparisons can be made by comparing products from three different sources. For products of the same type, purchase with caution if the price is too low. Overall, it is advisable to seek advice from experienced individuals or formal institutions when making a purchase to avoid being deceived.