I'm a digital product - 数字产品。

Dear Customer, wherever you are.   The Digital Downloads on this website are provided to you in good faith and, since they have come from a Service Provider Server they should not cause any problems with your computer or phone.   If you need a hand having any of this explained to you, contact me.   I have found resources on the internet from all over the world which are aimed at amusing you or helping you with your studies.   Obviously where a download is free, there is no returns policy.