Peb nyob nraum paub tias yog ib qho ntawm kev tshaj lij rooj vag hluav taws xob valve tuam ntxhab thiab cov muag khoom hauv Suav teb. Thov tsis pub mus yuav bulk fais rooj vag valve ntawm tus nqi sib tw ntawm no thiab tau txais cov lus hais los ntawm peb lub Hoobkas.

Xa kev nug