Paper Cups: Siv cov khob ntawv pov tseg tsawg dua

Tam sim no, yuav luag txhua tsev neeg thiab chav tsev npaj cov khob ntawv tso quav pov tseg, uas yog siv los ntawm ib tus neeg thiab muab pov tseg tom qab siv. Nws yog tu cev thiab yooj yim, tab sis xws li ib khob khob hides ntau yam teeb meem. Muaj peb hom ntawv khob ntawm kev ua lag luam: thawj tus yog ua los ntawm cov ntawv dawb thiab tsis tuaj yeem tuav dej thiab roj. Qhov thib ob yog lub khob ntawv waxed. Ntev npaum li qhov kub ntawm cov dej hauv nws siab tshaj 40 degree, cov wax yuav yaj thiab tso cov carcinogenic polycyclic aromatic hydrocarbons. Hom thib peb yog daim ntawv-yas khob. Yog tias cov ntaub ntawv xaiv tsis zoo lossis cov cuab yeej ua haujlwm tsis zoo txaus, hauv cov txheej txheem kub-kua lossis siv polyethylene rau khob ntawv, kev hloov pauv yuav tshwm sim thiab cov carcinogens yuav raug tsim. Txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhuam, cov yas yas, cov yas yas yas, cov yas yas ntxiv rau lub khob ntawv. Yog tias cov khoom siv ntxiv loj dhau los yog siv cov yas yas tsis raug cai, kev nyiam huv yuav nyuaj rau lav.