Improved pushpin / Pushpins

Common pins often cause the destruction when we use it fixed the paper.
The greatest feature of this design is to Protect paper documents from being destroyed, so as to preserve the integrity of the file.It uses the principle of frame“ Four Corners Protection".Put the paper into the groove of the pin, to avoid any adhesive or needle nail trace. Various forms of different specification pushpin can choose more better way auxiliary fixed different size and shape of the file.Modeling from Chinese traditional tangram,not only increases the interest, but also can be combined into a whole,bring us more convenient packaging and transportation.