In order to distinguish between true and false bronze doors, the identification methods of true and false bronze doors should be realized. First of all, we should know what is called false bronze doors. At present, there are several kinds of false bronze doors in the market.

　　（1）合同签订的铜板厚度和铜板实际生产误差，由于铜的高密度8.9T / m3，价格从6万-700万/吨，0.1mm误差，工厂成本节省150元

　　(1) The thickness of the copper sheet and the actual production error of the copper sheet signed in the contract are due to the high density of 8.9 T/m3, the price is from 60,000 to 7 million tons, and the error is 0.1 mm. The cost of the factory is saved by 150 yuan.

　　（2）铜铝复合板，表面铜厚度一般为0.1mm-0.2mm;

　　(2) Copper-aluminium composite plate, the surface copper thickness is generally 0.1 mm-0.2 mm;

　　（3）铜复合板，表面铜厚度一般为0.12mm-0.15mm;

　　(3) Copper composite plate, the surface copper thickness is generally 0.12mm-0.15mm;

　　（4）不锈钢电镀，表面铜厚度一般为0.3μm?0.4μm。

　　(4) Stainless steel electroplating, the surface copper thickness is generally 0.3? 0.4 um.

　　上面的铜板门被统称为假铜门，表面采用纯铜的材料，使用普通人无法区分引入几种方法供您参考：

　　The copper plate doors above are collectively called pseudo-copper doors. The surface is made of pure copper. It is impossible for ordinary people to distinguish and introduce several methods for your reference.

　　1、条件允许使用设备测试，仪器名称：板厚测量仪，根据不同材料测量声速测试所有材料是什么样的材料，设备价格在3500元，有很多厂商在线。

　　1. Conditions permit the use of equipment testing. Instrument Name: Plate Thickness Measuring Instrument, which measures the sound speed of all materials according to different materials. The price of the equipment is 3500 yuan. Many manufacturers are online.

　　2、因为一般私人用户没有上述条件，现在为了上述四种假铜门介绍。一般铜门厂为节省使用薄铜板造铜的成本，具体做法如下：

　　2. Because the general private users do not have the above conditions, now for the above four kinds of fake bronze doors. In order to save the cost of making copper from thin copper sheet, the general copper gate factory has adopted the following specific methods:

　　（1）门框可以看出，使用折叠机折叠机折边刀边，让看起来很厚，但眼睛看得见，因为两层铜层叠在一起，圆弧形，真实的单铜边缘呈现90度的直角，同时在角落的战斗中可以清晰的看到薄薄的现象。

　　(1) The door frame can be seen, using folding machine folding edge knife edge, so that it looks very thick, but the eyes can see, because the two layers of copper overlap together, circular arc, real single copper edge presents 90 degrees of right angle, while in the corner of the battle can clearly see the thin phenomenon.

　　（2）铜板门一般采用0.25mm-0.4mm软铜压花压花（中央铜板后门只要压模为0.25mm-0.4mm，如客户需要花卉模特推荐腐蚀过程。

　　(2) Copper plate doors are generally embossed with 0.25mm-0.4mm soft copper (only 0.25mm-0.4mm for the back door of central copper plate, if customers need flower models to recommend the corrosion process.

　　（3）门的安装表面的包装拆下，离开铜门5米以上，铜板上方0.8mm的光线检测，做无下一波无光，相反，有一个清晰的波如果太阳在直接的夏天更强大。

　　(3) The packaging of the installation surface of the door is removed, leaving the copper door more than 5 meters, and the light detection of 0.8 mm above the copper plate is done without the next wave of light. On the contrary, there is a clear wave if the sun is stronger in direct summer.

　　（4）铜和钢复合面板测量更方便直接使用铁可以使用，用一小块磁铁，因为铜门框架与铁框架外面关闭9mm门，如用较大的吸力石头吸力太小时的试验当测量吸力石时，吸力面只是由于吸力。

　　(4) Copper and steel composite panel measurement is more convenient for direct use of iron. A small magnet is used because the 9mm door is closed outside the copper door frame and the iron frame. For example, the suction surface of the suction stone is only due to suction when the suction stone is measured in a test with large suction stone for too long.

　　（5）铜和铝复合板，铜铝由于两种材料的密度差异过大，铜8.9T / m3，铝2.7T / m3，用手指敲击听到声音，纯铜拍打声音沉闷，铜和铝复合板击败了声音的颤抖。

　　(5) Copper and aluminium clad plates, copper and aluminium clad plates, because the density difference between the two materials is too large, copper 8.9T/m3, aluminium 2.7T/m3, with finger tapping to hear the sound, pure copper clapping sound dull, copper and aluminium clad plates defeated the sound tremor.

　　（6）不锈钢电镀，由于镀层太薄，表面与刷毛非常不同，纯铜不一样，无法修复。

　　(6) Stainless steel electroplating, because the coating is too thin, the surface and brush are very different, pure copper is different, can not be repaired.

　　以上描述或一点。较简单的方法：用户用刀安装在门前面的任何正面的线路切断。因为所有的线条都盖上玻璃，只要拆下一点点，玻璃贴后拆下就行了，而铜门手工安装在框架上，超过0.8mm硬相反比较软当你看起来分开，看看铜板部分。

　　The above description or a little professional. The simplest way: the user cuts off any front line installed in front of the door with a knife. Because all the lines are covered with glass, just remove a little bit and remove the glass after pasting, while the brass door is manually mounted on the frame, more than 0.8mm hard on the contrary is relatively soft when you look separated, look at the copper plate part.

　　当购买铜门时，应注意以下几点：明显低于市场价格肯定是假的。签订合同必须明确双方的权力和责任，如铜不到工厂的厚度承担任何责任。用户的检测手段：方法（以上教导方式）等。

　　When buying copper doors, we should pay attention to the following points: obviously lower than the market price is certainly false. The power and responsibility of both parties must be clearly defined in the signing of the contract. If copper is not thicker than the thickness of the factory, any liability shall be assumed. User detection methods: methods (the above teaching methods) and so on.