Daqing's specialty is petroleum. I heard that there are handicrafts that sell a drop of petroleum sealed in plexiglass and placed on the table for viewing.
But if you want to buy one, you might have to go to the Ironman Memorial Museum or the Oilfield Science and Technology Museum. I haven’t bought one and I don’t know where they are sold.
When in Harbin, I have to buy authentic Reedus sausages to eat with my family. I must buy the authentic ones.
Daliba is something passed down from Russia. It is very unique and has a relatively long storage time. It can be taken back by train. You can just take these two things home.
If you still want to bring some handicrafts, you can wander around the streets of Harbin and buy some Russian-style gadgets.