Selection of the control box（控制箱的选择）
1：To determine the size of the front panel of the control box, one must first know the screen size and the number of buttons installed in the control box, as well as the size of the buttons. After a reasonable distribution of positions, the size of the control box's front panel can be obtained.确认控制箱前面板尺寸，首先需要知道安装在控制箱的屏幕尺寸和按键数量按键尺寸，合理的位置分布后得到控制箱前面板的尺寸，
2：Confirm the depth dimensions of the control box, the size and shape of the electrical components or required parts installed inside the control box, and the depth of the control box must be greater than the size of the internal components of the box.确认控制箱的深度尺寸，控制箱内部装备的电气件或者所需零件的尺寸和大小，控制箱深度须大于箱体内部的零件尺寸，
Please look at the following example:请看以下示例：
This is a panel with dimensions of 395*315mm. The opening size is 309.5*231mm. There are 9 keyhole holes with a diameter of 22mm and 5 indicator light holes with a size of 7mm. The internal components require a depth of 100mm, so we should choose our 130mm deep box. The model of the box is 130-395-315.这是一个尺寸为395*315mm的面板，开孔尺寸为309.5*231mm，分布了9个直径22mm的按键孔，5个7mm的指示灯孔，内部装载的零件需要100mm的深度要求，所以应该选择我们130mm深度的箱子，箱子的型号为130-395-315
