I have heard about some unusual-to-the-USA valves on the tires of some Chineese scooters, but the ones on mine are standard Schrader type.
So, I can't help there, except to have you talk to a local scooter dealer. You should be able to have Schrader valves installed, but it will cost a bit, mainly labor.
Tire Pressure:
Front: 25 psi
Rear 1 rider: 28.4 psi
Rear 2 riders: 32 psi
Scoot Safely,