Polymesse is organized by a small group of students and is a commission of VSETH (German: Verband der Studierenden an der ETH, English: Association of students at ETH).
As a non-profit organisation, VSETH provides a wide range of services at ETH for all students. Amongst those are the association's magazine "Polykum", the large first semester party ESF and a bag for all freshmen of ETH. Use the opportunity to be present at the campus around the year. An overview about the sponsorship opportunities is given in the following document:
You are welcome to contact us to put together a sponsorship package fitting to your company.
Any sponsorhip will not have an influence to the allocation of booths at Polymesse.