any restrictions on bringing canned or sealed food into China from the US?

Are there any restrictions on bringing canned or sealed food into China from the US? Can I bring shampoo in a 355ml bottle? I assume the 100ml limit is per item, as I have shampoo, conditioner, deodorant, etc. Also, my husband suffers from allergies and must carry a nasal inhaler of 26ml. Will he be able to take that on the plane?