1) High quality base paper used, even in weight per sheet2) Evenly coated, sensitive to heat and color3) Refinedly cut, consistent in tightness, and able to pass machine freely4) Tight and solid in fiber structure, waterproof packing, fit for long-term preservation5) 2 red caution lines, each at one meter from the corresponding end to help customers operate conveniently6) Condition of preservation: ventilated, dry, clear of light7 Applicable to various models of heat-sensitive electrograph8) 210, 216, 257, and other lengths producing area:Hangzhou China