Dab tsi ntawm cov ntoo yog tawv ntoo sib xyaw? Hardwood yog lub npe dav dav ntawm ib hom ntoo nrog qhov siab thiab tawv, xws li ntoo qhib, ntoo tshauv, ntoo tshauv, birch, elm, jujube, thiab lwm yam. Cov ntoo hauv av ntoo, ntoo tshauv, ntoo tshauv, birch, elm, jujube, txhua tus yog cov tawv ntoo.