为了更好的为我们的客户提供技术服务，“富延升Technical support”微信号正式投入使用。You can contact our technical engineers through wechat signals to get more convenient and timely technical services。Identify the QR code below, or wechat scan code, add wechat signal as a friend。

Wechat Customer Service: Monday to Saturday, 8:30-17:00 (except holidays)

Regular working hours: Monday to Saturday, 8:30-17:00 (except holidays)

Technical support紧急售后服务电话：13306936805、15960183685（7x24小时）