szelins Communication is a professional wireless product Manufacturer & Wholesaler. Main products are wireless cellular mobile modems & routers & repeaters (5G Modem, 4G Modem, 3G Modem, 5G Router, 4G Router, 3G Routers, Cellular Repeaters, NB-IoT terminal, LoRa gateway, GPS device and Outdoor AP wireless backhual radio).