High quality-All plywood is laser cut and the edges of the wood and parts are smooth. If you notice burrs when opening the package please sand it with sandpaper. Ability training-very suitable for cultivating children's intelligence improving children's practical ability and logical thinking ability. Children love these DIY building kits which can enhance creativity and increase logical awareness while attracting the brain. Manufacturered by SHPEHP. Skilled craftsmanship-this creative DIY build kit is perfect for some handy artwork relaxation therapy and cognitive health. All our build kits are specially manufactured to induce therapeutic value to relax the brain. Gifts and decorations-to promote the interaction between parents and children is the perfect gift for children and friends. Puzzle size-The assembly size of the Royal Dragon Boat is 13.77*8.34*7.2 inches assembly parts: 133.