Sudoku adult logic thinking children educational toysMaterial:WoodenAge:>3 YearsPackaging:CaseType:Sudoku 1. Non-toxic, environmentally friendly and healthy 2. Zen wood is dense and heavy, wood grain is thin and straight. Tissue structure is less 3. Eucalyptus water-based paint. Characteristics of eucalyptus: heavy, sturdy, impact resistant, easy to bend under steam, can make shape, good nail holding performance, but easy to crack. The texture is clear, the wood texture is uniform, the color is soft and smooth 4. Environmentally friendly water-based paint, water-based thinner, organic solvent- paint, of benzene, toluene, xylene, formaldehyde, TD toxic heavy metals, non-toxic and non-irritating odor, harmless to the human body, does not pollute the environment, The film is full, crystal clear, and flexible 5. It has the characteristics of water resistance, wear resistance, aging resistance, ylowing resistance, fast drying and convenient use