In the 1980s, so-called 3D printing technology was realized. The concept and technology of 3D printing have not been dramatically improved for decades. Most of its current applications are limited to medical assistance and scientific research, and it is far from being able to truly change our lives.

1. The speed is too slow. 3D printing is simply additive manufacturing. On the basis of two-dimensional printing, the stacking is cumulative, and the basic manufacturing precision has to be met at the expense of time.

2. Material type limitations and characteristic defects.

At present, there are more and more choices of 3D printing materials on the market, but they are far away from fully satisfying industrial and consumer needs.

3. The cost is expensive. An industrial grade SLS, SLM or SLA 3D printer is usually over RMB million, and the most expensive can reach tens of millions of RMB. And with the expiration of patents for major 3D printing technologies, the cost of many entry-level 3D printers has plummeted. At present, the most popular entry-level 3D printers are mainly FDM and SLA printers. The cheapest XYZprinting da Vinci Jr can only take home for $200. However, the functionality of these desktop 3D printers is limited. First of all, the print volume is small, and it is usually a luxury to print a small stool. Second, the speed is very slow, no longer rumors. Then there is poor print quality, which usually requires a lot of post-processing.