In the past 40 years, China's communications industry has experienced 1G blanks, 2G following, 3G breakthroughs and 4G simultaneous exploration.

Simple Network Management Protocol is a widely used network monitoring and control protocol.

Multiple-Input Multiple-Output (MIMO) is a wireless technology that uses multiple transmitters and receivers to transfer more data at the same time.

The 4G industrial routers can be divided into core router (core level), distribution router (enterprise level) and access router (home level) according to the perspective of the object of use.

4G module is a general term for a product in which the hardware is loaded into the specified frequency band, the software supports the standard LTE protocol,

5G Wi-Fi is short for fifth-generation Wi-Fi technology. Wi-Fi technology was born in 1997 and has now reached its fifth generation.

The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files from a server to a client using the Client–server model on a computer network.