1, from the yellow pages of local telecom.
2, the school, online search, you can find it by asking, it is really not the first floor to ask the Education Bureau, I don't know if there is this consulting business, it is difficult for training institutions to accept it all, too many, all kinds, all walks of life, and not necessarily have a business license.
3, spend money to buy information, not necessarily. There is a website dedicated to selling data and information. In addition, people with connections can find those who sell data and information, such as mobile telecommunications, banks, industry and commerce.
4. Help-seeking information is distributed in well-known local forums, and information is collected in newspapers and periodicals.