1. Screen printing is a kind of stencil printing. The principle is similar to the use of stencil printing papers (in the past, many schools used that kind of simple equipment), the graphic area was hollowed out on the printing plate, and the ink will arrive through the hollowed out area. The surface of the substrate.

2. Heat press machine is a method of printing a graphic on a special heat press machine paper (or other medium) and then using a high temperature and high pressure to "stick" the image on the surface of the substrate. The principle of the two is completely different