What is the recommended tire pressure for the mid-range version of the Dashiang 2.0?

Normally 2.5, in cold winter it can go up to around 2.6 or 2.7.

The tires for the 1.5 and 2.0 are the same, right? Normally, it's around 2.4-2.5. Since we have cold winters in the north, I inflate them a bit more, up to 2.6. In summer, around 2.4 is fine.