Lub rooj tsavxwm osb tuaj yeem muab faib ua plaub qib: osb1, osb2, osb3, thiab osb4.
osb1 yog lub hom phiaj dav dav board thiab cov khoom siv kho kom zoo nkauj (nrog rau cov rooj tog zaum), haum rau sab hauv tsev qhuav. Nws tuaj yeem hloov kho MDF thiab PB kom ua tiav cov rooj tog zaum hauv tsev, tshwj xeeb tshaj yog tsim rau tag nrho cov txee thiab txee dai khaub ncaws.