In the five years from 1984 to 1989, the core 4D patent technologies of 3D printing, SLA, SLS, FDM, and 3DP, were successively launched. The number of patented technologies increased significantly compared with that before 1984, and the industry entered an initial period of development. The establishment of 3D Systems, Stratasys, EOS and other companies opened the era of commercialization of 3D printing. During the same period in China, research teams represented by universities such as Tsinghua University, Huazhong University of Science and Technology, and Xi'an Jiaotong University began to study 3D printing and developed a small number of rapid prototyping prototypes. The earliest university research forces in contact with 3D printing formed the “five major schools” of 3D printing in China today.
In 1986, Dr. Xiaoqin Xu went to the United States to study, joined the United States Naval Welding Institute and the world's largest 3D printing company 3D Systems, as the technical director, led the development of the SLS technology has a revolutionary impact on the manufacturing industry.
In 1988, Professor Yancheng Nian of Tsinghua University contacted 3D printing for the first time during his visit to UCLA in the United States. After returning home, he began to specialize in 3D printing. His team led many important achievements in the field of rapid prototyping.
In 1992, Professor Lu Bingheng of Xi'an Jiaotong University discovered the application of 3D printing in automobile manufacturing during his visit to the University of Michigan. Subsequently, Lu Bingheng's team developed a research and development of a photo-curable rapid prototyping manufacturing system in China, and developed an international first-rate UV rapid prototyping device.