I'm not sure a UPS or USPS post office box would work. The few times I have ordered from China (and many US suppliers) I wasn't given the option to select the carrier. I don't think UPS/FedEx will deliver to a USPS box.Get a usps po box. Can be had for as low as $60 a year. UPS also offers it for double the cost if you don't want to mess with usps.
They have mail stores that are like the ups store or the now gone mail boxes etc which allow deliveries from any carrier. Those places will narc on you though.I'm not sure a UPS or USPS post office box would work. The few times I have ordered from China (and many US suppliers) I wasn't given the option to select the carrier. I don't think UPS/FedEx will deliver to a USPS box.