... bycast 2.inner with high density spange, 3. seat is webbing +spring dining chair CH 1141. solid ... birch wooden frame,2. seat and back are uphoystered by bycast leather, can ... be changed as client needed3. seat and back are covered with fire-proof foam, ... high density, 30kg, meet BS 5852 standard4. seat is webbing+spring, can be changed as cliens' requirements5 ...