Technical standards: thermal paper rolls . - Diameter outside roll: + Type 1 (diameter 38 mm) with paper length: 15m. + Type 2 (28 mm diameter) with a paper length of 7.5 m. - Paper core: inside: 11mm; outside 15mm. - Paper width: 57 mm. - The edges of the paper roll are even, flat. Paper materials :Quantification 60GSM / M2 Coating of chemical substance: uniform, bold When printing on the POS printer does not lose focus. Retention time of 3 months or more. Print embryo: Print engraved logo and other meanings: Printed by Offset printing technology 04 front color and 04 back color (print content changes according to each order) - The end of the roll (before the 25 cm paper runs out) The warning paper out of ink reflected in red color with the content: 25cm longer is paper out. Safety for the user: Content :Bisphenol A (BPA) ¤ 0.115 mg / cm2.