1. Free-of-charge items include on-site visiting, catalogue searching for cores and samples, and browsing and downloading data from the website.

2. For duplicating, scanning, and printing, only production costs are charged.

3. As required, duplicated data can be sent through postal system, while the user needs to pay the postage.

4. For sampling and testing of cores and samples, production cost are charged according to related regulations of the state.