In order to better serve the development of science and technology innovation enterprises and give full play to the role of credit ratings in supporting the financing of science and technology innovation enterprises, China Chengxin International has developed a rating method and model for science and technology innovation enterprises. According to reports, the scope of application of this rating method includes: science and technology innovation industries or fields where the relevant country encourages cultivation and development, with external industrial policies and financing policy support, and the scope of the science and technology innovation industry or field is adjusted according to the development of the national strategy; the technical barriers in the field are relatively high, the enterprise has relatively strong business growth in recent years, and has outstanding technical and competitive advantages in the segment; and the R&D expenses and number of R&D personnel are relatively high. According to another report, China Chengxin International introduced the “technological innovation competitiveness” index for the first time, combining the risks and characteristics of science and technology innovation enterprises. On the basis of comprehensively measuring the competitiveness and financial risk of the assessed target's scientific and technological innovation competitiveness and financial risk, the individual basic credit rating (BCA level) of the assessed target was given, and the credit rating committee assessed the final subject credit rating of the assessed enterprise by considering the effects of special external support on improving their credit quality.