Consider visiting the annual international and regional trade fairs and exhibitions in Latvia. The venues are modern and attract a wealth of visitors. Here is the list: Trade Fairs in Latvia 2016
The Latvian Investment and Development Agency (LIAA) can assist registration of businesses. See the following link for information on registration, taxation, customs and other aspects of setting up your business and finding the right Latvian partners http://www.liaa.gov.lv/trade/market-entry/business-forms-and-registration
USEFUL LINKS
Check out Latvia's growing start-up and innovation community - Labs of Latvia
TechHub Riga is a co-working space for new technology startups that can meet, work, learn and collaborate. It is a home for 30+ startups and a host for various events, such as monthly meetups and annual tech conference TechChill Baltics. Even more, TechHub has become synonymous with innovation and technology, and the centre for the startup community in Latvia.
Ventspils High Technology Park
The Foundation "Ventspils High Technology Park" (VHTP) is to provide all the necessary infrastructure and support services for the development of companies that are engaged in the field of high technologies and perform its activity in the city or region of Ventspils.