Our registered trademark is Jinan USR IOT Technology Co., Ltd. is a company from china to do business over world, we supply all kinds of Electronics with Cost-effective to customers.we begin work at 2006 , located at Jinan Shandong China. Now, we have good Advantages in xeltek Programmer , rigol oscilloscope , GPRS DTU , Wifi and LAN to RS232 modules. We design and produce RS232/RS485/TTL UART to Ethernet/WIFI/GPRS convert product. We can supply OEM and ODM service.