Compatible DYMO Printers: DYMO LabelWriter 300, 310, 315, 320, EL40, EL60, SE300, SE450 DYMO LabelWriter 330, 330 Turbo, DUO, Turbo 400, 400 Turbo, 400 Twin Turbo, 450, 450 Turbo, 450 Twin Turbo and 450 DUO, 4XL CoStar LabelWriter XL, XL+, BC, BC+, SE Series, ASCII Series. We start with superior raw materials: (a) High quality direct thermal paper (80G/M2), (b) Permanent acrylic adhesive, (c) White glassine release paper (60G/M2), (d) Superb whiteness, (e) Water, grease and rub resistant. Labels are produced using the latest technology and undergo numerous quality control checks. Our certifications include ISO 9000/9001/9004/19011: 2000 and others.