Resume Printing after power-off: ender 3 could resume prints after a power outage or lapse occurs Easy and Quick Assembly: only 10 minutes with 20 screws assembly before the first printing, simple assembly but more stable performance, Win-Win for fun and time. Patent Technology One: MK-8 Extruder greatly reduces plugging risk and bad extrusion; Patent Technology Two: adopt high stand profile with wheel, it is noiseless, smoothly and durable.