First of all, the best business of 3D printing service is hand mold processing service. In fact, the earliest start of 3D printing into the manufacturing industry was the production of hand boards. The hand board is what we usually call the model, which is the sample used for testing before the product is formally finalized. Because some complex structures are difficult to manufacture when making hand boards in traditional CNC manufacturing, and the material and labor costs are too high, many manufacturers turn their attention to 3D printing. Due to the advantages of 3D printing, no matter how complex the structure is, it can be made, and a lot of labor and material costs are saved. Therefore, it is favored by manufacturers in the hand board manufacturing industry. At present, the main industrial design companies, model companies, toy factories, electrical appliance factories and so on that mainly use 3D printing to make hand boards. If entrepreneurs buy 3D printers and become a 3D printing service provider, they can develop towards this industry.
　　The second is the portrait sculpture. As a good 3D printer, it can produce almost perfect equal proportion portraits or even Full-Body Portraits with powerful reproduction function. The formal service only needs scanning and modeling to start printing and production. For example, some studios began to use 3D printers to provide customers with wedding 3D portrait services to record the sweet scenes of the new couple in 3D. 　　Finally, there is the production service of various models. Open a 3D printing service company, which specializes in docking with various model production companies and processing them. The model production area is very wide, involving architectural sand table model, aviation model, automobile model, toy model, graduation design model, sculpture model, etc. With 3D printing technology, the model company has a very large implementation space, and orders that could not be received in the past are now possible. There are many strange things printed by end users, such as wine bottles, kettles, real estate models, car models, etc. 　　Of course, the above are the most common 3D printing services in our daily life, such as making shoe molds, industrial parts, batch printing of small items, etc. However, all 3D printing services are based on having a good 3D printer, while G5 adopts screw rod extrusion and particle consumables, which is much better than ordinary FDM printing in terms of material cost and efficiency.