CTI provides supply chain security solution services related to electronic identity authentication and software testing. Because traditional supply chains use on-site face-to-face confirmation and mature business operation procedures, the biggest challenge faced by supply chain enterprises using the Internet model is risk management, including To avoid legal risks, transaction risks, technical risks, etc., in order to solve the above business security issues, the China Test CA digital certificate system is introduced throughout the business. On the one hand, mature electronic signatures and encryption technologies solve the platform’s transaction risks and technical risks, and on the other On the one hand, electronic signatures that comply with the relevant provisions of the Signature Law effectively circumvent the legal risks of the platform