Tee pob khoom siv

Tee pob khoom yuav raug muab faib ua yas, ntoo, khoom khoom cua (environmental protection) ua luaj rau. Yas pob antimony tseem nrov heev. Yog vim li cas ntawd yog lub rugged, khaub-ncaws nyias, thiab yuav siv pheej; siv ib lub pob ntoo tee nrog coos keeb kwm, nws pheej yig, nws kuj yog ib tug nrov; thiab vim yog cov khiav tej lawm ib unprecedented haum, hluavtaws khoom ntawm tej kev tiv thaiv tej tee pob kuj surfaced, tiam sis vim tsis muaj nqi ntawm tus neeg siv.