According to public data from the government, more than 10,000 5G base stations will be added in China every week. This shows that 2020 will be the explosive first year of China's 5G base station construction, and 5G will also enter a new era of development. What are the features of 5G? This is an article to introduce you to 1G, 2G, 3G, 4G, 5G networks and 5G functions. HYC Co., Ltd. can provide customers with a full range of passive WDM modules for 5G fronthaul transmission.