The main process at this stage is: metal powder (iron powder, alloy powder, non-ferrous metal powder, porcelain powder, etc.) → mixing → pressing → sintering → subsequent processing → finished product. Compared with conventional casting, forging, cutting and other mechanical manufacturing processes, its process has less (or no) cutting, material saving, energy saving, high efficiency, uniform quality, suitable for mass production, no environmental pollution, low price, etc. Features, and can produce products with special properties and other processing techniques that are difficult to guarantee production. It is an ideal substitute for some castings, forgings and machined parts.