Preschool educational institution (Ozolnieki) Name: Pre-school education institution heating, ventilation and heating unit (Ozolnieki)Address: Rigas street 29, Ozolnieki, Jelgava region, LV-3018″Documentation: design of new heating and ventilation systems. Designing a new boiler house Request a service Request a Consultation Sign up for a free consultation, and our experts will get in touch with you! Contacts