Powder metallurgy is a process technology that uses metal powder as a raw material, after forming and sintering, to manufacture products of various shapes. The advantages are: 1) Special materials can be processed; 2) High material utilization rate; 3) Mass production is possible; 4) High accuracy of material distribution. The disadvantages are: 1) The product has poor strength and toughness; 2) It cannot be made into large-scale products; 3) Only some parts with simple structures can be prepared; 4) The cost of compression molding is high.

3D printing technology, also known as additive manufacturing, is a technology that produces parts by layer-by-layer printing based on digital model files and using bondable materials such as metal powder. The advantages are: 1) Strong production capacity, mainly reflected in the simple operation and high portability of 3D printers; 2) The ability to manufacture complex parts that cannot be produced by powder metallurgy; 3) Low production costs and short production cycles; 4) Products High precision, and the comprehensive performance is superior to the products produced by powder metallurgy; 5) Green and environmentally friendly, with less by-products in the whole process. The disadvantages are: 1) The performance requirements of the metal powder are high; 2) If the operation is improper, the product will also have micro-cracks.