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