筆筒

具有雙邊大容量可裝筆，並在尖角處磨圓讓使用者安全有保障，還有功能前面凹朝處可放月曆、照片…….等。
It has a double-sided large-capacity pen that can be loaded, and is rounded at the sharp corners to ensure the safety of the user. It also has functions such as calendars, photos, etc., which are concave in the front.