The oxygen concentrator in Guangzhou where to find?

In the province of Chinese medicine hospital opposite the store to see a lot of oxygen machine, there are fish leap turtle and in the into the and the invincible Kang's. I bought a is the turtle of the invoice, feel very formal. I bought one that is turtle have invoices, feel very formal. Take a look there, the service is very good. Provincial Hospital directly across the street, is the crosswalk across the phone is 81OqZ64I. you can consult with it!