Natural solid wood: with oil-resistant, wear resistance, corrosion, not easy to crack, wood grain, easy processing, toughness, etc., widely used in fine wooden board, wooden crafts productionWater-based paint: aqueous lacquer is a healthy loop paint. It has the characteristics of non-toxic and non-irritating odor, harmless, non-polluting, water, wear resistance, and aging.It is conducive to cultivating children's space imagination, exercising mathematical thinking, geometric design capabilities, is a great tie for the great building technology of ancient China, but also a fine collection of dolls.It is recommended to use cloth clean, usually we wipe the hole in the surface of the hole with a clean and humid gauze or handkerchief, or gently wipe it with some water.Occasionally, the wooden toy is easy to make black moldy, regularly need to put it in a ventilated balcony to dry.The wooden puzzles are precision cut, closely fit, durable, and painted finishes.3D puzzle design cultivates genius skills, including problem-solving ability, spatial imagination, creative thinking, etc.Provides daunting challenges, but also allows you to relieve stress, relax, and enjoy brain stimulation.