My home decoration has started carpentry. Please ask someone to help me suggest how much material I should buy.

This guy, find a carpenter to make a budget. According to your requirements, the specific analysis: wooden cabinets, you need to buy joinery boards, panels or directly use paint-free boards! Wooden fake kang, known as "tatami" in the decoration industry, needs to buy battens and joinery boards. These ceilings in the living room and dining room need plasterboard and slats. If it is an internal angle line, you need plaster line or wood line. You don't need ecological wood. Generally, you can use ecological wood as a balcony ceiling, and you can choose a relatively low-priced sauna board.