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。

看拉手外觀

Look at the appearance of the handle

查看拉手的面層色澤及保護膜，有無破損及劃痕。判別拉手的質量從表面處理中考究，好的砂光拉手應是色澤相對暗淡給人以穩重感覺;半砂在亮光跟砂光交接的地方那條分隔線應該是直的，假若是歪歪曲曲的線條明顯是次品;而好的亮光拉手應該是色澤反射如鏡，亮麗透徹，無半點瑕疵。

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.

試拉手手感

Try the handle feel

好的拉手，摸起來應該很舒服。因此選購的時候，可以試著摸摸看，看表面處理是否光滑，拉起來順不順手;好的拉手邊緣應該做過平滑處理，不存在毛茬扎手割手情況。

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.

聽拉手響聲

Listen to the handle

市場上的一些不道德的廠家，偷工減料，在拉手管內灌裝水泥或焊鐵或沙石，給人一種厚重的感覺坑騙消費者。辨別劣質拉手可以從響聲中辨別，用一硬器輕輕敲打拉手管，足厚管的拉手響聲應該是較為清脆的，而薄管就比較沉悶。

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.

查螺絲孔周圍面積

Check the area around the screw hole

選擇拉手，需要注意一點，zui好選擇螺絲孔周圍面積大一些的拉手。因為拉手螺絲孔周圍的面積越小，打在板上的拉手孔就要求越確卻，否則，稍有偏差，會導致拉手孔外露。因此，為防止這一情況出現，需要注意選購的時候查看拉手螺絲孔周圍面積是否太小。

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.

選驗證書

Certificate of brand selection

名優，質量當然上乘。因此選購的時候，選擇正規肯德基門廠家產品。此外，現在的建材市場中，好的的門拉手大都是進口的，進口拉手通常較具設計感，質感好，相對也貴。若是挑選進口的拉手，可要求看產品的進口證明文件，以免商家魚目混珠。

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.