Carbonless Luam Ntawvyog siv los ua cov ntawv sau ua lag luam uas yuav tsum tau ib lossis ntau daim ntawv sau ua ntej, xws li cov ntaub ntawv sau tseg thiab cov ntawv luam.Qhov cov ntawv luam tau feem ntau cov ntawv ntawm cov xim sib txawv.
Cov neeg feem coob xav tiasCarbonless Luam Ntawvyuav cuam tshuam rau tib neeg kev noj qab haus huv.pcb (polychlorinated biphenyl) hauv cov ntawv carbonless tau txwv nyob rau xyoo 1970 vim yog kev noj qab haus huv:Cov Ntawv CarbonlessUa tom qab 2000 yuav tsis ua rau tib neeg txoj kev loj hlob ntawm kev lag luam, cov ntaub ntawv carboness tsim yog ib puag ncig zoo thiab muaj kev noj qab haus huv.
Feem ntau, cov ntawv tsis zoo carbonless muaj ib lub Lat BPA, BPA tuaj yeem ua kom muaj cov ntaub ntawv tsis muaj carbonctabive thiab cov khoom siv roj carbon monoxent, siv tau cov luam tawm roj carboncture vim nws yooj yim los ua cov ntawv luam.
Peb Lub Hoobkasmuaj ntau xyoo ntawm kev paub hauv cov ntawv carbonless. Thiab cov ntawv carbonless tsis muaj bpa thiab pcb.our Hoobkas ib txwm ua raws li kev tiv thaiv ib puag ncig thiab kev noj qab haus huv.
Lub sij hawm Post: Mar-27-2023