After-sale service includes:
    1.If the software or hardware was damaged during the mailing , we will change it for free；
    2.If users have any problems in the process of installation and use, you can feel free to contact us and we will patiently instruct you to install and use our software；
    3.If software non-artificial damage occurred during the using within a year, we will provide free replacement.
    4.Try our best to help customers to solve problems during maintenanc