Tsev-Khoom- Nyhav Series-

Ntuav Sandbag

Raws li ib qho ntawm cov coj ntuav cov chaw tsim tshuaj paus sandbag thiab cov muag khoom hauv Suav teb, peb sov siab txais tos bandbag ntawm cov khoom sib tw los ntawm peb cov khoom pheej yig rau peb rau cov khoom siv pheej yig ntau.