... 3.die-cutting to 30pcs Custom educational children cardboard jigsaw puzzle,kids paper jigsaw puzzle printing,kids DIY toy specification: Product describtionSize6x6 ... toys4.suitable for 2-5 years old kidsFunction1.Can not only train children the hand work ability, improve the ... imagination, creativity and logic thought ability of children; 2.developing children's intelligence when kids put the puzzles ...