Cost of electronic password locker at capital airport?

Sorry, I cannot find the fare of the electronic password locker. They are suitable to put small-size articles. Instead of that, cargo shelves are provided for big-size luggage left for days.
The concrete charge standards are the following:
1. CNY 20 within 24 hours for the luggage with its length, width and height less than 65 cm
2. CNY 30 within 24 hours for luggage with its length, width and height less than 200cm and more than 65cm
3. CNY 50 within 24 hours for luggage with its length, width and height more than 200 cm

If you wanna know more information, you can dial 010-64540921, 010-64598152 or 010-64558580 to consult the airport staff.