Thank you Yana,
I took a look at the 510(k) you attached are all GEX.
Our product A is ILY according to the approved FDA letter, and product B is GEX. I really not sure if we can find any predicate device for the "combination" product (one product has the common functions product A and B have).
K061614 and K080102 product codes are "ILY,GEX". But their indication of use looks like only the ILY (heating lamp), not GEX (general surgical). I am confused.