1.Shopping malls, enterprises, schools, stages, banks, securities, public security, tsheb thauj mus los, kev lag luam thiab kev lag luam, hluav taws xob, kev lis kev cai, tsev kho mob, chaw ua si, tshav dav hlau, chaw nres tsheb, chaw ntau pob thiab lwm yam kev lag luam.
2.Nws tuaj yeem ua tau raws li qhov xav tau, ntawm cov cylindrical npo muaj kev ua haujlwm siab txhuam thiab tuaj yeem nqa, zaum, dai, thiab lwm yam, kom ua tau raws li qhov yuav tsum tau muaj ntawm qhov chaw mus rau qhov loj tshaj.