eSinger is a professional electronic contract signing and management integrated product, which can help you complete the signing and management of various contracts safely and conveniently on the Internet. The core technology of eSinger is based on public key cryptography technology, third-party electronic authentication technology and time stamp technology to generate legally valid electronic signatures. Whether you are in different industries such as Internet finance, Internet medical care, copyright e-government, or in your personal life, you can use eSinger to sign and save your important documents.

eSinger's product features include:

- Support a variety of document formats, such as PDF, pictures, etc., you can upload any documents that need to be signed, or directly use the files on the cloud storage.
- Supports handwritten signatures, you can easily sign with your finger or stylus on your mobile device, or you can use preset signature styles.
- Friendly operation interface, simple steps, complete contract signing quickly. You can complete the signing of contract agreements on any mobile device anytime, anywhere.
- Automatically generate traceable signature certificates and documentation records, which can be downloaded and saved. The document signature certificate contains information such as user login ID, user IP, document creation time, document serial number (encrypted), and provides effective legal evidence for the contract.
- Cooperate with an international leading electronic evidence certification agency to provide valid legal evidence at the national notarization level for each electronic contract you sign. Every document can be very convenient for judicial evidence collection.
- Adopt 256-bit advanced key encryption standard higher than the bank level to ensure the most secure and reliable user authentication and data encryption on the service platform. File encryption is safer than paper, providing the highest guarantee for the preservation of contract evidence.

eSinger also provides multiple APIs to provide electronic signature services for application platforms. You can register through an enterprise account or personal account, and perform real-name authentication to enjoy various services of eSinger. eSinger is your best electronic contract solution in the digital age.