Glass door clips are generally suitable for 12mm glass. Padding paper can be added to make it suitable for 8mm and 10mm thick glass doors, and some door clips can clip 15mm thick glass. The long door clamp is applicable to 12mm-15mm thick glass doors. 1. The door clamp shell can be divided into stainless steel, aluminum shell and iron shell according to the material. Stainless steel is the best, aluminum alloy is the second, and iron shell is cheaper, but it is easy to rust. 2. Surface treatment of shell: mirror light, sanding, titanium gold, placer gold, rose gold, etc. Various surface treatments can also be oxidized according to customer needs. 3. Three materials are generally used for door clip castings: iron, aluminum and stainless steel. Aluminum and iron are the most widely used, and aluminum has the highest price, the best service effect and service life. Iron parts are cheap, but because the material is hard and easy to rust, some manufacturers use rubber or PVC materials instead to reduce costs. 4. Cushion paper can be divided into paper pad, asbestos pad, non asbestos pad and rubber pad according to the material. The locking clip pad paper is 1.0mm, 1.2mm and 1.5mm respectively, and the others are 2mm. The door clip chuck can be divided into four types according to its use: lower chuck, upper chuck, top chuck and curved chuck. 6. The lower clamp can generally be divided into JU (GMT) head, N (Nova) head, D (Domar) head and B (Sifang) head, and can be divided into stainless steel and carbon steel according to the material. 7. The upper, top and curved collets are generally made of zinc alloy, and of course, they can also be made of stainless steel or carbon steel with a small amount. 8. The door clamp screws can be divided into stainless steel and iron according to the material. It can be divided into casting screws, lower chuck screws and upper (top/curved) chuck screws according to their uses.