TTT is certified by training institutions, such as Liu Zixi in Shanghai, Yang Sizhuo in Shenzhen and AACTP in Beijing. You need to consider the authority of the certification body; If the organization is authoritative, the course content is close to the enterprise and the operation is strong;

The trainer certificate of the Ministry of Labor is a national unified examination and is widely recognized; But frankly speaking, the content of the textbook is lagging behind, and its relevance to enterprises is not as great as above;

What you need to weigh now is the pros and cons of "universal recognition" and "effective in actual combat" ~ ~