A Great Educational and Fun Gift for Children----3D puzzles are great for developing children's intelligence and logical ability, cultivating hands-on ability, developing imagination, as well as increasing patience. Have fun creating with your family and friends. Product Introduction ---- Our high quality and detailed products, made using advanced laser cutting technology, have passed the European Union, the United States, and other test certifications(EN71, ASTM, 7Pm HR4040/3C). Made from Eco-friendly paper and EPS foam boards, our products are safe and easy to assemble, no tools necessary. Assembly Instructions: 1. Push out the pre-pressed mold carefully. 2. Build the molds in letter order. 3. Follow the illustrations to complete the assembly step-by-step 4. If a joint is loose, fix with glue.