1, easy to spell to fold, you don\'t need to use glue, scissors and other auxiliary tools.
2, security, environmental protection, the paper adopted the safety, environmental protection, non-toxic, compounded EPS foam board.
Imported fine foam board, double-sided printing, metal texture, crisp sweet voice of the fold.
3, corretly, brain training hand coordination, improve visual discrimination ability, establish spatial ability, really naive sympathies.
4, connotation is rich, rich in historical and cultural knowledge, the popular science knowledge, enrich their knowledge.