The air holes in the wheel hub refer to the holes opened on the spokes of the wheel hub, which can form an acoustic short circuit between the inside and outside of the spokes of the wheel hub to reduce the sound radiation efficiency of the wheel. The valve hole…

When we use a laser machine to engrave text and patterns, or cut objects, we often need to position the object to be processed to a specific position without deviation, otherwise the path of engraving or cutting will be offset. This is very time-consuming. In batch production, each object must…