What is the name of the most expensive class in China?

Customs clearance protocols. I learned from Jinan Branch of Tuhua Education that the most expensive class for Tuhua is called the customs clearance agreement class. From mid-October of/kloc-0, different types of interview training courses were launched, with prices ranging from 2380 yuan to 15800 yuan. Among them, the most expensive is the customs clearance agreement class, and the price is 15800 yuan.