Improve children's innovative consciousness and ability to win at the starting line. Cultivate children's interest in learning and thirst for knowledge and improve their academic performance. Manufacturered by Binory. Scientific knowledge in small production can lay a foundation for future inventions mathematical physical and chemical studies. Exercise children's hands-on ability understand the advantages and disadvantages of solar photovoltaic power generation and photovoltaic power generation. Cultivate children's practical ability so that knowledge is no longer theoretical.