Dab tsi yog cov khoom siv ntawm lub raj mis yas? Puas yog nws yuav tsim lub tshuab yas?

Yas hwj yog ua los ntawm cov khoom siv xws li polyethylene lossis polypropylene thiab ntxiv nrog ntau cov kuab tshuaj organic. Feem ntau ntawm cov haus dej haus cawv yog cov khoom lag luam yas. Cov khoom siv ob, polyethylene thiab polypropylene, yog non-toxic thiab tasteless. Lawv muaj kev nyab xeeb rau sau tib neeg. Txawm li cas los xij, ib zaug dhau los ntawm cov polyethylene maj mam yaj los ntawm kev kub lossis acid xeb, thiab cov kuab tshuaj organic tso tawm, nws yuav tsim kev puas tsuaj rau tib neeg lub cev.