The Magnesium board is made of filling materials ,such as sawdust and all kinds of crushed plant straw (you can select any one kind )and several chemical raw material which are token as modified material after special technology .the board has such features:quickly hardening ,high strength ,large-format ,fireproof ,damp-proof and good waterproof performance.It can be nailed ,planed and stuck,so it can be used widely at indoor decoration ,such as wall skirting and ceiling of market,hotel,club ,station ,office building and living room.