River Valley Technologies

We have been typesetting mathematical journals and books for 21 years.  The company was founded in the UK (originally Focal Image Ltd) and teamed up with an Indian company in 1996, well before the outsourcing trend. Our focus remains technical and mathematical matter. We use almost entirely free, open software, and we believe we are the only supplier creating PDF from XML/MathML with 100% automation.

http://river-valley.com/