| http://www.w3.org/ns/prov#value | - The exhibitions of SECUREX trade fair, as well as of SAWO International Fair of Work Protection, Fire-Fighting and Rescue Equipment, INSTALACJE International Fair of Installations and Equipment, TCS System Heating Fair and Poznan Media Expo fair that were held at the same time, attracted over 24 200 professionals, including installers, general contractors, major investors, representatives of the u
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