Logistics from China to the United States can be said to be the largest direction of circulation, because the U.S. Customs is actually very relaxed for imported goods. Generally, there is no tariff within 800 U.S. dollars, and customs clearance is also relatively convenient.
For our own lines, we started with the US dedicated line, including Mason sea delivery, US air delivery and US dedicated line small packages. Generally, within the United States, small packages are delivered by USPS (that is, the local US postal service), and large goods are delivered by the local US FEDEX GROUND or UPS.
One special thing about the United States is that they classify glasses as medical supplies, so FDA certification is required. Generally, it takes a long time to clear customs by express delivery. In this case, you can consider our dedicated line, which includes customs clearance.
Also, when sending cups to the United States, do not declare them as glasses, otherwise they will think they are glasses and the delivery will be delayed for a long time.