1. Nws yog biodegradable, tab sis tsis yog hnab yas;
2. Cov hnab yas siv feem ntau yog ua los ntawm polyethylene. Cov khoom siv raw siv yog roj av, thiab roj av yog peb lub zog tsis txaus. Hauv qhov sib piv, cov hnab ntawv yog tsim los ntawm cov ntoo, ib qho khoom siv txuas ntxiv.
3. Cov txheej txheem ntawm kev tsim cov hnab ntawv yuav ua rau muaj teeb meem dej thiab huab cua hnyav dua;
4. Recycling paper bag kuj yuav tsum tau muaj zog ntau dua;
5. Yog tias lub hnab ntawv pov tseg tau muab pov tseg los ntawm qhov chaw pov tseg, nws yog qhov nyuaj sib npaug.
