How to Replace Window Cover Parts for 2D/3D/4D Laser Levels

This repair method is applicable to most Huepar 2D/3D/4D laser levels (except models 603CG/602CG).
Preparation: Check the screw threads and prepare the corresponding screwdriver.
Please note: Different model series of window covers match different types of screws. You need to check the matching screwdriver before repair.
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