In Hong Kong nearly all EMS and casevac is done by the Government Flying Service using EC155's and Super Pumas.
As to what is best for China, it would depend entirely on the operation, range-payload, support etc and one ship which works in one coastal city might be unsuitable for Xinjiang.
Interesting times, as it appears that the view of helicopters in China is one of "new and exciting" rather than the "Not in My back yard" nimbyism of the over developed world.