CTI provides electronic identity authentication and software testing related Huace cloud signature server services. Huace cloud signature server is a professional electronic signature product developed by Huace CA on the basis of years of technology accumulation in the field of PKI and electronic signatures. This product integrates services such as seal management, certificate management, application management, document signature, signature verification, statistical query and log audit. It supports PDF and OFD format signatures, single-page chapters, multi-page chapters, and seam-stitched chapters. Keyword signature, designated location signature and other types of signatures. This product provides a wealth of signature management functions and service interfaces for electronic inspection reports, electronic contracts, electronic orders, government approvals and other industry applications, as well as professional and fast electronic signature technical support