因为激光安全等级要求危险的地方一定要锁螺丝，为了更高的安全等级我们都锁上了螺丝，当你收到设备时你可以根据自己的需要拆卸。
    The bolts are there to enable it to get class 1 certification, all panels must not be accessible unless there is an interlok switch to disable the laser from firing, there are switches on lid, left panel, tube enclosure etc, once you have the machine you can disable what you want