For 3 years. In 3 years you should keep confidential all the technical information and know-how offered by us.

三年，三年内你应该对我们提供的一切技术信息和专有技术保守秘密。

This information offers a fuller picture of someone's behavior and interests.

这些信息可以更全面地描述某人的行为和兴趣。