NSK Shenzhen Technology Co., Ltd

??SK??is a Shenzhen based Chinese manufacturing company with R&D and marketing departments. We have been focusing on VIDEO DOORPHONE SYSTEM and VIDEO ENTRY SYSTEMS for last 7 years, and following systems had been launched and marketed successfully:1. CX system: Four wire, ??tart??Connection;2. NCX system: Four wire, ??istributor Bus??Connection??3. NTW system: Two wire, ??epeater Bus??Connection;4. PBX system: PBX switch + Video distributor Bu connection;5. DWL system: Digital wireless ,2.4G;6. IP system: IP routing. [详细介绍]