Cov yas hollow board tuaj yeem tsim cov ntxhiab tsw sib txawv thaum lub sijhawm ua haujlwm. Cov laj thawj rau kev tsis txaus siab peculiar yog:
1. Cov ntxhiab tsim tawm los ntawm cov khoom tsis tsim tawm thiab cov khoom lag luam tawm thaum lub sijhawm ua cov yas hollow yas.
2. Lub peculiar tsis hnov tsw tsim los ntawm thermal decomposition lossis oxidation ntawm yas hollow board.
3. Vim muaj cov hloov pauv, yaj thiab ploj ntawm cov quav, cov ntxhiab tsw los ntawm cov tshuaj tiv thaiv nrog cov ntawv ntim.
4. Cov ntxhiab tsw los ntawm cov nplaum, luam ntawv inks thiab cov kuab tshuaj siv rau hauv cov khoom sib txuas.
5. Cov ntxhiab ua rau los ntawm kev tsis haum, thiab lwm yam. Qhov tseem ceeb tshaj ntawm cov yam tseem ceeb yog cov cua sov ua kom cov plastics, oxidative aging, thiab qhov ntxhiab los ntawm cov quav thiab khi. Muaj ntau hom ntxhiab tsim los ntawm cov khoob khoob ntawm cov ntawv ntim khoom yas, xws li los ntawm qab zib rau cov tshuaj, hlawv, paraffin, thiab cov kuab tshuaj, nrog cov khoom xyaw ntau. Thaum cov ntxhiab tsim tawm, nws yuav paug cov khoom ntim, yog li nws yog qhov tseem ceeb kom nrhiav cov peev txheej thiab daws nws kom raws sijhawm.
