Main board refers to general A-share listing, including Shenzhen and Shanghai stock markets; Small and medium-sized board is listed for some small and medium-sized enterprises and listed in Shenzhen stock market; Growth enterprise market, also known as the second board market, was just launched this year, aiming at listing some high-tech, high-growth and high-risk enterprises.

Supplement:

In China, the Shanghai A-share code starts with 6, and the Shenzhen A-share code starts with 00; Small and medium-sized board market code starts with 002; GEM code starts with 300.