Good chance to get it in a week. But waiting for 2-3 weeks is possible also. Depends a lot on customs.
My current order from China (3fvape) was processed in Beijing on 2016-07-22 (whatever it means) and still sitting in Chicago customs:
ISC CHICAGO IL (USPS), Processed Through Facility, Your item has been processed through our facility in ISC CHICAGO IL (USPS) at 10:42 am on July 27, 2016.
2016-07-22 05:24
CHINA, BEIJING EMS, Processed Through Facility
2016-07-20 22:49
Origin Post is Preparing Shipment
2016-07-20 22:49
CHINA, Acceptance
Mine is currently stuck there as well. I was all excited as this order got to US customs 2 days after I ordered it (fastest ever) but it has been sitting there now for 3 days
Oh well, this one was mainly parts for some of my tanks.