J&R Technology Ltd yog ib qho ntawm Tuam Tshoj voip dual khawm kev lag luam xov tooj thiab cov chaw muag khoom nrog ib tus hom nto moo, peb kuj muaj peb lub Hoobkas, peb yog cov tuam txhab tshaj lij thiab tuaj yeem muab koj zoo tshaj plaws voip dual khawm industrial xov tooj khoom. Txais tos mus yuav cov khoom lag luam zoo los ntawm peb.