According to the list of top 500 enterprises in China, Zheng Fan Science and Technology is not one of them. The list of the top 500 Chinese enterprises was jointly published by the Entrepreneurs Association of china enterprise confederation and China, and the selection criteria mainly included operating income, profit, asset size and other indicators. Although Zheng Fan Science and Technology is a professional equipment supplier, its related indicators have not reached the level of entering the top 500 enterprises in China.