H-1B extension

Mr.pjiang:

I currently work with H-1B in a company without taking any Green card Application, and 6 yrs H-1B period will be expired at the end of year. And I had I-140 approved in previous company almost 3 yrs ago.

Question 1: Can I renew/transfer my H-1B visa with other 3 yrs in the current company? how about with other new offer?

Question 2 what will happen if I try to get visa from China in August. 

Many Thanks