Frame: It is made of solid wood, hard material, strong steel, anti-corrosion, anti-insect and never deformed.
Sponge: It adopts high-density foaming sponge and high-rebound sponge. It has moderate hardness and softness, good resilience and no deformation. The shape of the sponge is both modern and ergonomic, and the seat is comfortable.
Spring: high-quality high-strength snake spring, strong toughness and good elasticity.
Finishing: Depending on the actual needs of the user.