First-tier brands: Huawei, Polycom, Cisco, ZTE
Second-tier brands: Feishimei, Xiaoyu Yilian, Haoshitong, etc.
Current video When the network bandwidth is sufficient, the effects of conferences are basically the same. First-tier brands are relatively more expensive and more famous, while second-tier brands are more cost-effective and have better after-sales services, but their relative popularity is not that great