Txog Peb > Lub tuam txhab zoo

1. Pab neeg tshaj lij: los ntawm xyoo dhau los ntawm kev tsim cov kws tshaj lij thiab cov neeg ua haujlwm ntawm pab pawg tsim khoom, kev tsim cov khoom lag luam zoo tshaj yog lav.

2. Ua tiav cov kev qhia tshwj xeeb: tshwj xeeb hauv kev tsim cov fluoro-gypsum hmoov, tuaj yeem tsim cov cheeb tsam tshwj xeeb ntawm 100 mesh, 200 mesh, 325 mesh ntau qhov sib txawv, kuj tuaj yeem tsim raws li cov neeg siv khoom xav tau.

3. Cov khoom ruaj khov: txhua xyoo tso tawm ntawm 1 lab tons.

4. Kev xa khoom sai: ua kom tiav hauv lub sijhawm xa khoom.