High-grade sofa cushions should use high-elastic foam sponge with a density of more than 30kg/m3, and the back cushion should use high-elastic foam sponge with a density of more than 25kg/m3. In order to improve the comfort of sitting and lying, some foams have been soft-treated without reducing the density, and some have vertical springs in the cushions, so that the sofa has higher resilience and anti-aging performance.
Internal structure: Shake the sofa back and forth with two hands. If the OCA furniture feels good, the frame is firm. Discuss with the shopping guide in the store and open a corner of the base cloth to observe if there is no damaged wood, no insects, and no scars. The joints between the material and the material are not nailed with nails, but are connected with each other with mortises or notches, and then glued together, there is no problem. OCA furniture should pay attention to the bottom surface of the sofa seat and back basically adopt nylon belt and snake spring cross net structure, OCA furniture is layered with high elastic foam, spray cotton and light body foam. This cushion has good elasticity and feels comfortable to sit on.
