This is a very interesting and instructive scientific model. Solar and wind energy are an inexhaustible natural resources. It is not only rich, but will not cause pollution to the environment. With the global energy crisis continues to intensify, for the whole world developing green energy and photo-voltaic industry has become a trend. In order to let our children know earlier this new frontier industry, this product not only can be used for education of children. In addition, it can also be used as gifts for business customers,partners, employees or decorations of office, home. At the same time, it can show the concept of the low carbon life and environment protection.