Technical support：

Online submission, Email, WeChat online service: 

provide 7 × 24 hours online submission, Email / WeChat technical support

Remote online diagnosis and troubleshooting:

for telephone consultation can not solve the problem, 

authorized by the user we can remotely through the Internet 

to log on to the user network system for processing.

E-mail: support@dflhtec.com

Service complaints/suggestions：

If the customer is not satisfied with the service of our company, or the service personnel of our company are not satisfied, you are welcome to contact WeChat / email, we will solve the problem in time until you are satisfied.

E-mail: Vladimir001@dflhtec.com

Whatsapp:https://wa.me/+8615818668650

Wechat/Telegram: : +86 158 1866 8650

Thank you very much for choosing our products and services, we believe that our professional services will bring you great help.