What is the most powerful lecturer institution?

The lecturer brokerage company should be Yizhou lecturer brokerage, with rich customer resources, strong cooperative media, one-on-one professional personal assistants and professional personal brand promotion websites. There are more than 30 training websites that cooperate with Yizhou's lecturers and brokers, such as China Etiquette Training Network, China Trainers Network, Open Class Network, Bank Training Network and Hotel Training Network.