eSUN Silk Rainbow Metal PLA Filament, Silky Multicolored 3D Printer Filament PLA, 1KG Gradient Changing Multicolor Filament for 3D Printer, Silk Rainbow Multicolor

Founded in 2002, eSUN compounds polymer in-house and supplies raw material to a number of white-label brands. Their own catalog covers PLA through high-temperature engineering grades — one of the broadest material ranges from a single manufacturer.