The processing of non-standard parts is usually the usual machining processes such as turning, milling, planing, grinding, and pliers, and milling workers' cutting, scribing, drilling, and tapping. Symbolic fields include airlines, aerospace industry chain, ship industry chain, construction machinery industry chain, CNC lathe industry chain, etc. The typicality of mass production means that it is for the automotive industry, and the mold shell industry chain, which is the research and development of new models and ideas in the automotive industry and the key service items for mass production, still belongs to the production of small batches alone.

The advantages of non-standard parts processing, small batch production may well save time and raw material costs, and speed up the cycle time of materials into the market. Small batch production is closely related to the prototype template. The prototype template is the standard for the processing of small non-standard parts, and the processing of small non-standard parts is most of the prototype template. The processing of non-standard parts is suitable for large-scale, high-precision, and complicated production and processing. It is especially responsible for the production and processing of arcs and smoothness. The advantages of non-standard parts processing are small. The processing of non-standard parts varies from single digits to three digits, and is processed according to simple molds, soft molds, or immediate production.