There is no trademark, it must be a rework machine or other inappropriate air conditioning units.

For air-conditioning manufacturers, whether indoors or outdoors, products must have regular manufacturers' trademarks, product nameplates, bar codes, warning signs and other labels when they leave the factory. It won't leave the factory without a trademark.

It is suggested to find the air-conditioning product manufacturer after sale and let them send someone to confirm the real state of the air conditioner on the spot.