Product name 3D three-dimensional puzzleBrand series of wooden ballsThe main material of high quality woodFor over 2 years of agePackaging plasticBenefits for childrenChildren's toys - growing partner， the eternal theme， intelligence toy.Development of child intelligence， training children's ability of practice and thought， to give children a happy childhood ndelible.The benefits of primary and middle school studentsStudent， wisdom toys - increasing mental batteries.Educational toys may seem simple， but it contains a secret and mysterious infinite， involves many disciplines in mathematics， geometry， topology， graph theory， operational research， etc.. After the break， in the process with the students to play， would produce a certain perceptual knowledge of relevant knowledge of these disciplines， increase intelligence in the imperceptibly， deepen the friendship between classmates， ready for integration into society