It seems to be a little special for nowadays but someone may be in need of such black round cardboard tube packaging box for pen ink bottle. As today we use less and less ink pen it remains still a high-end product for literal work, thus such proper tube packaging box is a good choice to contain and protect its ink of high value. The box is made of 400g grey cardboard paper as outer tube and 350g black cardboard as inner tube of 0.8mm thickness, with such robust structure made of high density material it won’t disappoint you in terms of functionality. The design is simple but clear, a common CMYK printing with information like brand name, product model and usage guide presented to let customers know better about the product and to bring good visual effect on the decoration. On the surface, it is also treated with UV glue to protect against scratch and making the surface brighter. If you have any special needs, we can customize it all as you want.