Question:Is it possible to acquire this Visa finishing April?Do you recommend an (F) or an (M)?

I’m currently in China working for a Greek Company at building ships.I entered the country with a multiple entries Visa(F) last May, after extending another 180 days the previous one, now is about to expire next May, 8th.
Problem: I’m a Cuban citizen wanting to go to Cuba for vacations in June, then come back to PRC and finish the project, in total I will need another 6 months, now , it has to be multiple entries because of my future trip to Cuba.

Thanks for your time and prompt response,