Han Bang's high technology needs no monitoring. How to refund the fee?

Contact after-sales refund. According to official website of Beijing Hanbang Hi-Tech Digital Technology Co., Ltd., Hanbang Hi-Tech can contact for after-sales refund without monitoring, and relevant order information and payment channels need to be provided during the refund process. Monitoring system is one of the most widely used security systems. The most suitable on-site monitoring system in the market is handheld video communication equipment, and video monitoring is the mainstream.