What is the treatment of the sales representative of Midea Refrigeration Products Sales Company? Is there much room for promotion?

My classmate worked as a sales representative in Chongqing Midea Refrigeration Products Sales Co., Ltd., and recruited on campus after graduation. The basic salary during the internship period is 2200, and the basic salary after becoming a full member is 2800. Plus performance bonus and travel allowance, it's almost 4000 a month. Without promotion opportunities, it is difficult to be promoted to supervisor, so I left after working for 1 year. The pressure is not great, but it is ok as a job-hopping platform that has just graduated.