In the engine manufacturing industry, honing is a must-do process for all OEMs to produce new engines. It plays a decisive role in the overall performance of the engine and can be said to be the essence of engine manufacturing technology. For example, when repairing and renovating old engines in the automotive industry, the surface roughness is controlled at 1μm level through advanced honing and machining technology, so that the power of the repaired engine exceeds expectations and the sound is very stable.