Wood sticking to the face refers to the closing and pressing line between the opening of the door and window and the building wall as seen from the wooden door and window; It's l-shaped—

Spool plate refers to the side wall of the door and window opening; It's an l-shaped i.

Veneered plywood bobbin board refers to the side wall with doors and windows. First, the base plate is used as the bottom plate or lining plate, and then the surface is covered with the surface decorative plate.

Hardwood bobbin board refers to the side wall of doors and windows without base lining board, which is directly made of solid wood board.