Grinding: The finishing process of the machined surface through the relative movement of the grinding tool and the workpiece under certain pressure by using the abrasive particles coated or pressed on the grinding tool.

Application of Grinding: It can process all kinds of steel, hardened steel, cast iron, copper and aluminum and its alloys, cemented carbide, ceramics, glass and some plastic products. Grinding is widely used to process various high-precision profiles in single-piece and small-batch production, and can be used in large-scale mass production.

Polishing: A processing method that uses mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and flat surface.
Application of Polishing: Polishing can process simple surfaces such as flat surfaces, but cannot be processed for curved surfaces.

There is no essential difference between grinding and polishing, except for the choice of abrasive and abrasive materials. Polishing generally cannot improve the shape accuracy and dimensional accuracy of the workpiece, and polishing usually uses fine abrasive particles below 1µm.