Definitely Not the same engine.

Unfortunately, both companies are in the same Province in China. (Zhejiang) the (a lot) less ethical of the two alludes to people that they are the same engine - I can assure you that they are not. Unfortunately, that same company also uses the other companies photos in his advertising.

At one time they did use some common unfinished castings for the older models of 45cc and 65cc engines. As did a few other manufacturers. That has not been the case for quite some time.