Material selection - select materials according to customer requirements.
　　Casting - casting is mainly to improve the density of materials and produce unnecessary hardness.
　　Annealing - so that the hardness can be rapidly reduced to facilitate finishing.
　　Finishing - mainly processing and shaping the embryo material.
　　Quenching - increase the hardness of formed products.
　　Thermal insulation - in order to increase the wear resistance of products, thermal insulation must be carried out for a long time.
　　Initial grinding - grinding the oxide layer on each surface of the product.
　　Fine grinding mirror grinding - improve product accuracy, gloss, parallelism, etc.
　　Inspection - let unqualified products refuse to enter the market.
　　Packaging - different packaging according to different products.
　　Finished product - to be delivered to the factory.