Let the children experience the sense of accomplishment and satisfaction of completing one thing during the hands-on process, and let the children grow up in learning. What you buy is not only a family science toys, but also a kind of responsibility and attitude between parents and children in the . Awareness: Train children's practical ability, hand-eye coordination, exercise thinking, develop intelligence and explore science. Manufactured by hand, using the digital unlocking mode of mechanical password lock, all the code wheels can be turned to the correct position, and the lock can be unlocked by pushing down the button, without power supply or key, with simple structure and easy assembly. Children can put some of their own , toys or pocket money when they are finished. Special fit design, no glue is Just take the parts off the plywood, and you can an intelligent and interesting assembly journey.