Yes, they sell galangal.
Hmart or kam man, or you might be able to get the paste bottled in 99 ranch
Try to find in Patel cash Carry or subzi Mandi in medicine department
Check the vegetable Dept. And dry herbal Dept.
Ginger is always there, Galangal not sure, feels like not always.
I believe you should be able to get it or you can also try HMart
Thanks! Your answer is awaiting moderation.