The certification of Changzhou high-tech enterprises focuses on identifying enterprises with strong innovation ability, independent intellectual property rights and core technologies, which can represent Changzhou's scientific and technological development level, can promote the development of pillar industries, and are influential at home and abroad. In recent years, the selection of Changzhou high-tech enterprises has become more and more difficult for the entry threshold of participating enterprises. Enterprises not only need to have core independent intellectual property rights, but also need a large amount of scientific research funds and more than 60% of the sales revenue of high-tech products.