
Shenzhen Yuantong Modern Technology Co., Ltd. is a leading manufacturer of industrial telephones, exporting products to 120 countries. Our main products include: · Industrial telephones / Explosion-proof telephones / Weatherproof telephones · IP Telephones / Call box/intercom / Rugged phones · IP Intercom Server / Console / PBX / Switch / Gateway · Speakers / Amplifier / Beacon light These are used in highways, urban underground pipelines, railways, mining, oil, ...