According to the materials, dado can be divided into three categories: pure solid wood wall panel, solid wood composite wall panel solid wood composite wall panel.

(1) The pure solid wood wall protection board refers to the horizontal vertical square, core (belly) board, all wooden parts (except for supporting board batten) are made of solid wood sawn wood solid wood board.

(2) Solid wood comprehensive wall panel refers to the horizontal vertical square, the frame part is made of solid wood panel sawn timber, the core (belly) panel is made of wood-based panel.

(3) The solid wood composite wall panel refers to the wood-based panel used for the horizontal vertical square belly (core) panel, the surface is pasted with solid wood skin painted directly.

The lines used for the above three types of wall panels are solid wood, such as waistline, top line, skirting line, bucking line on the wall panel, nailing line, etc.