Yuav Zippo roj yuav hloov nrog cawv

Xwb, cawv ntawm purity yog combustible. Tsaug niaj hnub tshuab, Cawv manufacturers muaj peev xwm ua tau cawv nrog ib theem purity saum toj no 99.99%.

Nyob rau hauv rooj plaub ntawm ZIPPO lighters, Dej tsis muab cais thaum lub combustion txheej txheem, tiam sis theej evaporated, rendering no xaiv.