Why does each information service fee need to deduct the same money?

Why does each information service fee need to deduct RMB 263?

For example,The information service fee we should get in July this year is RMB 1,436.09,but the amount we actually got was only RMB 1,173.09.

So I want to know what is the use of this RMB 263 ,for what purpose?
Thanks.

What is the amount you bill your customers ?


How do you compute that you should receive RMB 1,436.09 ?

Why does each information service fee need to deduct the same money?
 
 
Q