The US documents (birth certificate, marriage certificate, power of attorney etc.) that are used in China, need to be legalized by the Chinese embassy in the US.
Also, we can obtain an apostille for the US documents. If you have any questions in this regard, please feel free to contact us: Tel: +852 30501814
It takes about 15 working days to legalize the US documents (including the shipment time from the United States to China).
We provide US legalization expedited service, the time will be one week sent out from the US.