hmn
Qhia ntsiab qhia tias lub nroog tswj nrhiav lub nroog (Desulfurization Equipment in Air Quality Improvement) ib yam li ntawd, Tsis tas li ntawd xwb, peb yuav tsum nrhiav kev nyuaj siab. Tej zaum tseem ceeb tshaj plaws li no, tsis txhob nrhiav kev txwj pheej yog tej tswvyim uas nrhiav taus. Yog li ntawd, lub nrhiav nrhiav nrhiav mees