Cov Khoom Uas Yas Yas Yas

1. Cov khoom muaj kev ua haujlwm zoo tib yam li cov ntoo. Nws tuaj yeem raug nailed, drilled, txiav thiab sib raug zoo. Nws yog kev cob cog thiab tsau nrog rau tes los yog tho bolts. Nws nto yog du thiab muag heev. Nws tsis tas yuav xuab zeb thiab xim. Nws cov xim muaj nplaum zoo thiab yuav pleev xim raws li tus kheej nyiam. 2. Khoom khib nyiab muaj qhov zoo dua lub zog ntawm lub cev, qhov chaw ruaj ntseg zoo dua li ntoo, lub suab nrov yuav tsim cov kab nrib pleev, warpage, tsis muaj ntoo nti, twill, ntxiv xim, zaj duab xis los sis cov khoom sib txuam ua rau cov khoom muaj yeeb yuj, kev txij nkawm. 3. Muaj peev xwm ua kom tau raws li ntau yam kev qhia, qhov ntau thiab tsawg, qauv duab, thicknesses thiab lwm yam kev xav tau, uas kuj muaj kev tsim ntau yam qauv, xim thiab cov khoom ntoo, kom cov neeg tuaj yeem xaiv ntau yam. 4. Cov khoom muaj cov khoom zoo xws li hluav taws kub, tsis muaj dej, tsis muaj paug, pov puag, pov thawj, pwm pov thawj, acid-alkali pov thawj, tsis muaj taug, tsis muaj pa phem thiab tsis muaj nqi. 5. Cov khoom muaj xws li ntoo tsoo, nyuaj dua cov yas, lub neej ntev, thermoplastic molding, siab zog thiab lub zog txuag. 6. Cov khoom muaj zog, nyhav, sov txuag, qhov dav hlau, tsis muaj formaldehyde thiab lwm yam tshuaj phem, tsis muaj tshuaj lom, tsis muaj kev ua qias tuaj.