I wouldnt call Yihua as professional product manufacturer... I dont own any of their products.. but from the reviews I have seen, they fall well short of the performance of JBC.
Thats not to say there is no place for Yihua..
I m just saying the market that Yihua would play and have strength in.. is not a segment that JBC would be interested in..

Plus, they are based in China.. It would take a lot of resources to fight patent infringement and even blatant copying of designs when the PRC govt does not bother about non Chinese companies in these sort of violations..