Guotai junan. According to the inquiry of Guotai Junan official website, Guotai Junan, as a long-term, sustained and comprehensive leading comprehensive financial service provider in China's securities industry, has spanned the whole process and multiple cycles of China's capital market development based on its strong domestic competitive advantage. Securities are all kinds of economic rights and interests certificates, and also refer to specialized products. It is a legal document used to prove that the holder enjoys certain rights.