. the application range of the design shown in the field of technology: the necessities of life. the idea is to solve the technical issue, so the subway line and metro tickets: pass to prevent the risk of injury, and two objects. to solve the trouble of the box. . abstract: the development of methods to solve the stiff celluloid plate (4), the route table (6) of the printing and the plastic to the holder (1), (5) to make the pass to keep safety and success of the mobile box. . research purposes: the important damage without danger of the route table at the use of chemical products, the two functions of the complex in the intensive, easy to carry. but the subway route table (6) and (7) the advertising space can be used for the industry of advertising, sales promotion, also can be used to write.
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