Blockboard Thiab Fir Board
May 27, 2022
1. Blockboard
Lub rooj tsav xwm loj loj nrog cov tub ntxhais ntoo muaj zog muaj zog, tawv tawv, rwb thaiv tsev kub, lub suab nqus thiab lwm yam zoo, thiab cov ntsiab lus tsis tshua muaj dej noo, feem ntau ntawm 10 feem pua thiab 13 feem pua.
2. Fir board
Fir ntoo yog cov khoom siv ntoo tshiab. Nws yog ua los ntawm cov cav ntoo loj. Nws yog ib lub phaj staggered zoo li tus ntiv tes. Nws qhov zoo dua yog tias nws tuaj yeem ncaj qha xim thiab pleev xim.