Shenzhen dongmen wholesale curtain market.

Hi
You mentioned curtain wholesale market at Hubei Rd. Can I know is it very far fm the Dongmen shopping street?
If I take the metro and then to the A exit into Dongmen, where do I head to from there?

Any idea what time are they open? cos I need to do custom curtain and having so constrained time.
Need to return to HK same day.
Thank you very much
Mdm Teo