Is it legal for Guangzhou Shengji Business Information Consulting Co., Ltd. to alternate?

It's been almost four years since I heard about and contacted the reciprocal student program. Shengji Company, which was previously registered by students studying German, has now completed a year of reciprocity and continued to study abroad. A comprehensive understanding is very formal. My personal feeling is that it is very important to get more information about professionalism, qualifications, contracts and so on, no matter which agency.