1. the surface of the bottom and other sides of the box is 1mm.
2. the perpendicularity of the front and rear sides of the box is about 1mm.
The parallelism of the top and bottom of the 3. panel is 0.5mm, and the verticality of the side and bottom is 0.5mm.
4. the panel should be upright after loading into the box. The verticality of the side and the bottom of the box is 0.5mm, and the parallelism of the bottom and the bottom of the box is 0.5mm.
5. installation of the circuit board or the chassis of the chassis, the need to use a tooling analog circuit board or chassis assembly, tooling loading, pulling out the box should be smooth, inserted into the box, should be appropriate and stable, no floating, loose phenomenon. The rigid connector should be positioned accurately, inserted and pulled out without any abnormal block.