It seems that the paste of ink is better than the general mark tube. The characters are also clear with the Danshaya, but they are weak against dirt and touch the work gloves or the like, they darken. However, it is soft and easy to use when it cools down.
Regular mark tubes are lustrous and their benefits are clean. The difficulty is hardened in the winter and the printing fades. The genuine tube of this time is a difficult point only to get dirty and no complaints in all others. ,