Wooden frame:
 Produced from Solid wood whose average water content is less than 12%, processed through insect prevention, anticorrosion, stoving, pressure planer processing, proved to be firm construction. Solid wood leg and batten. bed board:MDF+ plywood

Sponge:
 Using high density ecotype sponge, without Freon or other diffusant.
The sponge density meet 35kg/m3. Enable to be quick springback and recover original shape after long time compressed.

Leather:
 Select imported high quality leather and process exquisitly.