1, exclusively designed and produced in our factory; 2, with a patent NO.2009201302836; 3, can not only be used as a common pen but also entertain the user; 4, the puzzle is composed of 20 seperated patches to form a paiting which can also be producedas an advertising picture or a logo of a company under requirements of different customers; 5, at the top, there is a hanging cord; 6, can be filled with leads both of water and oil.