2, does not cover cap, 60 degree Celsius blast oven up to 627 hours in the baking, remove the writing is still normal;
3, the cover cap, about -40 degrees Celsius and store 180 hours, the recovery at room temperature, nature of the change, writing is still normal;
4, with exceptionally good water resistance, heat, cold, acid, alkali, light, chemical resistance and other properties;
5, feel comfortable with writing, lubricating fluid, writing full, beautiful does not invade the paper, do not flash, not dilute the phenomenon;
6, for different grades, different materials (stainless steel, nickel-copper-nickel alloy, lead, brass) with different pore sizes of the ability to write;
By the ASTMD-4236 and EN71 Part3 & 9 certification.
