2019new Teaching elevator function principle toy DIY Assemble
Complete DIY science educational toy kits set. It needs youself to assemble the parts, you can enjoy the DIY fun at the same time.
Great for DIY subject, science education, development of hobbies and interest.
Perfect educational toys for kids. help to improve the ability of children, suitable for young people at key stages of brain development.
It can be used as a power teaching experiment model.