What is the profit model of CTS Express? Especially in hotel reservations, how do they make a profit?

It's shameless for China Travel Express to take the commission of abacus, the wine reservation system and the transaction fee of guests. This is a contract with our company. However, most customers know this. When signing the contract, they don't give the hotel a reservation fee. In this case, CTS Express can only get the commission of the booking system abacus. The service of China Travel Express is poor, the cost is high and it sucks. I don't know what our company thinks about purchasing, so I found such a company.