if I have a big suitcase and want to go backpacking for a while, can I check luggage at the Nanjing airport?

I heard there is luggage left service and it is charged 10RMB within 4 hours and 20RMB longer than 4 hours.
You can store there for at most about one hours.
But I am not sure the exsiting, so it is suggested call the airport for asking and their phone number is 025-968890.

Thanks!