Can I apply Q2 visa in March but go to China in November this year for the 10 year multi entry one?

Yan, do you say you want to apply for a 10 year Q2 type in March but go to China in November? Of course it's possible to do so but I don't think it's a wise idea. If you plan to go to China in November, you can apply for the entry permit in September or October. If you apply for it too early but don't use it, it would be a waste of the validity.