Security is the first consideration. The lines of desks and chairs should be smooth and smooth. The round or arc edge is the best. In addition, there should be smooth switches and delicate surface treatment. Children's desks and chairs with sharp corners and hard and rough surfaces should be kept away from children. In addition, it is better to shake a few times with force when purchasing, and furniture with loose structure and wobbly feeling cannot be needed.

At present, there are Pinus sylvestris var. mongolica on the market, with straight texture, moderate structure, light and soft material, good drying performance, and it is the best board. There is also a particle board, which has a flat surface and strong decorative property; Both static bending strength and internal bonding strength are high; Excellent processing performance; Small warping deformation, good dimensional stability. Its disadvantages are large water absorption thickness expansion rate, large product weight, low nail holding force, and it is not suitable for multiple disassembly and assembly. Density board is a good material for making furniture because of its impact resistance and easy reprocessing.