I'd like to mail a 16 Chinese inch drum from Beijing to USA. How log will it take?

Generally, if you post by air, it takes about 10-15 days and if you use road or ship to post, you can receive your package in a month.
The posting fare depends on the weight instead of size. For example, if you post a 30kg package by air, you need to pay 2913.5 Yuan (RMB); if it is posted through air and sea, it needs 1586.5 Yuan (RMB). And if by road and ship, the fare is 663.5 Yuan (RMB).