cov duab puab, nrog cov xov sab hauv, tuaj yeem siv nrog bolts.Widely siv nyob rau hauv kev tsim kho, lub tsev cov ntaub ntawv, kho kom zoo nkauj hauv tsev, tsuas, tsheb thauj mus los, hluav taws xob thiab lwm yam lag luam, qhov loj me, kev sib txawv, kev thov loj.
