Ultra smooth technology our ultra smooth technology includes filaments capable of beautiful and smooth Extraction to assist build even the most delicate objects. Vacuum sealed we use vacuum-sealed packaging to isolate the moisturized environment and filament, and give you the best performance conceivable. High compatibility our filaments have been tested on more than a few 3D printer brands, receiving widespread and positive customer feedback. Quality is all the time our top priority, and we check every spool, vacuum seal, and package by hand to make sure optimal product quality. Our filament is a proven winner, and maintains the smooth and consistent printing experience needed to succeed in the most efficient printing results. Our filament is all the time round, and comprises no oily residue, air bubbles, kinks or breaks.