Hello everyone! My name is Yukun Wu. I am a 3d Printer Worker, a 3d Printer Repairing Man, a 3d Designer - including the design of mechanical parts, a 3d scanning technician and an Inventor of 3d Printer Parts and Accessories. The 3d printers that I worked on most extensively are FDM printers. I worked quite a bit on SLA and SLS printers as well. Of course, the earliest product that I invented, which is the 3d Printer's Auto-off Switcher, is the only product that I have a patent on. This is a device that switches 3d Printers off automatically once they finish printing. I am sure that for those of us that already use 3d printers to print objects, we know the importance of switching the printers off after they finish printing. I have also placed this device into my online store on Amazon, and I call this online store “Mr. Wu’s 3D Printer Corner”.