Hmm. It looks like all of their models share the same specs for the drivetrain: A 64 Ah battery with a nominal voltage of 72 volts. That's 4,6 kWh. Achieving the promised 250 km range would require the consumption to be just 1,84 kWh /100 km.
Now, a light vehicle like these are can have a lot lower consumption than any electric car sold in a western market, but that still seems a bit optimistic if you ask me.