I believe it is typical of engineering R&D firms that you can't talk about the details of what you do, or the products that are coming out.

Some of what can be produced is patents (describing the mechanisms), papers at conferences, and white papers.

Essentially, any special technology - anything providing competitive advantage - is kept under lock and key.

At least this is what I understand from talking and reading. Please feel to correct me with facts if I am wrong. :-)