Hlau yog mas muaj hlau, carbon thiab lwm yam alloy ntsiab. Nws yog cov khoom siv hlau. Cov txheej txheem ntau lawm tsis muaj kev siv lossis ntxiv ntawm formaldehyde. Yog li ntawd, hlau nws tus kheej tsis muaj formaldehyde.
Qhov chaw ntawm formaldehyde
Formaldehyde yog feem ntau pom nyob rau hauv cov ntaub ntawv hauv qab no:
Cov txiag tseem ceeb: xws li plywood, particleboard, fiberboard, thiab lwm yam khoom siv muaj cov nplaum thaum cov txheej txheem ntau lawm.
Cov rooj tog thiab txee: muaj ntau cov rooj tog thiab cov tub rooj tog thiab cov laug cam siv cov khoom siv dag, uas tuaj yeem tso tawm formardehyde.
Composite flooting: Laminated sib chaws floring thiab khoom ntoo sib xyaw ua ke pem teb no kuj tseem siv cov khoom lag luam tsis zoo thaum lub sijhawm ua haujlwm ntau lawm.
Lo Plua Plav thiab Xim: kua nplaum thiab pleev xim siv nyob rau hauv cov txheej txheem kho kom zoo nkauj yuav muaj formaldehyde.
Kev tiv thaiv ib puag ncig ntawm cov hlau
Cov hlau yog ib puag ncig cov khoom siv hauv tsev vim tias nws tsis muaj formaldehyde thiab yog rov ua dua tshiab. Hauv kev tsim kho thiab kho kom zoo nkauj, steel feem ntau siv rau cov qauv kev txhawb nqa, qhov rooj thiab qhov rai thav ntawv, thiab yuav tsis muaj qhov cuam tshuam tsis zoo rau huab cua sab hauv zoo.
