J&R Technology Ltd yog ib qho ntawm lub teb chaws Suav voip pib hu xov tooj rau cov chaw tsim khoom thiab cov muag khoom nrog rau ib lub npe nrov, peb tseem muaj peb lub Hoobkas, peb yog cov tuam txhab tshaj lij thiab tuaj yeem muab koj zoo tshaj plaws voip pib hu xov tooj , metro xov tooj khoom. Txais tos mus yuav cov khoom lag luam zoo los ntawm peb.