The surface treatment of the profile of KFC door handle mostly adopts anodizing to make the profile surface silver white. The surface treatment can enhance the appearance of the profile and prolong the service life of the profile of KFC door, The process flow of anodizing is charging → degreasing → water washing → alkali etching → warm water washing → cold water washing → neutralization and light out → water washing → anodizing → cold water washing → warm water washing → hole sealing → drying → unloading → finished product inspection → the thickness of oxide film after anodizing of profiles packaged KFC doors shall not be less than 10 μ m。

看拉手外观

Look at the appearance of the handle

查看拉手的面层色泽及保护膜，有无破损及划痕。判别拉手的质量从表面处理中考究，好的砂光拉手应是色泽相对暗淡给人以稳重感觉;半砂在亮光跟砂光交接的地方那条分隔线应该是直的，假若是歪歪曲曲的线条明显是次品;而好的亮光拉手应该是色泽反射如镜，亮丽透彻，无半点瑕疵。

First, check the surface color and protective film of the handle for damage and scratch. To judge the quality of the handle, first of all, pay attention to the surface treatment. A good sanding handle should have a relatively dim color, giving a stable feeling; Half sand at the junction of light and sanding, the separation line should be straight. If it is a crooked line, it is obviously defective; And a good light handle should be a color mirror, bright and thorough, without any defects.

试拉手手感

Try the handle feel

好的拉手，摸起来应该很舒服。因此选购的时候，可以试着摸摸看，看表面处理是否光滑，拉起来顺不顺手;好的拉手边缘应该做过平滑处理，不存在毛茬扎手割手情况。

Good handle. It should feel comfortable. Therefore, when purchasing, you can try to touch it to see whether the surface treatment is smooth and whether it is easy to pull up; The edge of a good handle should be smoothed, and there is no stubble sticking and cutting.

听拉手响声

Listen to the handle

市场上的一些不道德的厂家，偷工减料，在拉手管内灌装水泥或焊铁或沙石，给人一种厚重的感觉坑骗消费者。辨别劣质拉手可以从响声中辨别，用一硬器轻轻敲打拉手管，足厚管的拉手响声应该是较为清脆的，而薄管就比较沉闷。

Some immoral manufacturers in the market cut corners and filled cement or soldering iron or sand in the handle tube, giving people a heavy feeling and cheating consumers. The poor handle can be distinguished from the sound. Gently tap the handle tube with a hard device. The handle sound of the thick tube should be crisp, while the thin tube is dull.

查螺丝孔周围面积

Check the area around the screw hole

选择拉手，需要注意一点，zui好选择螺丝孔周围面积大一些的拉手。因为拉手螺丝孔周围的面积越小，打在板上的拉手孔就要求越确却，否则，稍有偏差，会导致拉手孔外露。因此，为防止这一情况出现，需要注意选购的时候查看拉手螺丝孔周围面积是否太小。

When choosing a handle, you should pay attention to it, Zui so that you can choose a handle with a larger area around the screw hole. Because the smaller the area around the handle screw hole, the more accurate the handle hole on the plate is. Otherwise, a slight deviation will lead to the exposure of the handle hole. Therefore, in order to prevent this situation, it is necessary to check whether the area around the handle screw hole is too small when purchasing.

选验证书

Certificate of brand selection

名优，质量当然上乘。因此选购的时候，选择正规肯德基门厂家产品。此外，现在的建材市场中，好的的门拉手大都是进口的，进口拉手通常较具设计感，质感好，相对也贵。若是挑选进口的拉手，可要求看产品的进口证明文件，以免商家鱼目混珠。

Famous brands, of course, high quality. Therefore, when purchasing, choose the products of regular KFC door manufacturers. In addition, in the current building materials market, good door handles are mostly imported. Imported handles usually have a sense of design, good texture and expensive relative price. If you choose an imported handle, you can ask to see the import certificate of the product, so as to avoid confusion.