SUBTANK Mini that I received is defective.
The curve tank is also unsteady on Joyetech eVic VTC Mini.
You can see on the photo that opposite sides have different thickness.


Also I uploaded videos:
Defective Subtank Mini 01Defective Subtank Mini 02The box was sealed, so I don't think it is fake.
I am very disappointed with the quality of Kangertech.
I have written to support, hope they will help.