Wiiboox ONE MINI Desktop 3D Printer, Single Extruder, 100 Microns, 7.8"x5.9"x5.9", 1 Air Particle Filtration Module, with One Filament Build size is 7.8" x 5.9" x 5.9" (20*15*15cm)Single extruder Layer resolution 100 microns (0.1mm) Please know that this printer was sold by Wiiboox, not other seller!We can also provide you with any patent certificates or brand cerficates. Thank you. World first desktop 3D printer equipped with particle filtration module, filtration fineness up to 0.08um Safety is the pursuit of Wiiboox. Wiiboox 3D printer has passed CE EMC, PAHs, REACH, LVD, ERP and ROHS tests