Before you call, please think about the following questions so that we can communicate more efficiently. 1. What service do you need? For example: monitoring installation, access control installation, optical cable laying, etc. 2. The situation at the scene. For example, how many floors are there in the building and how big the area is. 3. Location of the site. For example:No. XX, Floor XX, XXX Building. Detailed process: 1. Pay 38 yuan to 100 yuan in advance, with 16 years&; experience compared with 0 minutes&; on-site installation, maintenance and monitoring of the network camera of the entrance gate. The promotion is only available from March 1st to March 31st, 2022. 1. Installation monitoring: professional installation of various workplace monitoring, community monitoring, villa monitoring, residential monitoring, housing monitoring and office monitoring.