People visit BUDMA 2018 International Construction and Architecture Fair in Poznan, Poland, on Feb. 2, 2018. BUDMA International Construction and Architecture Fair is one of the most important meeting places for producers and distributors of modern technologies and building materials with trade representatives, architects, contractors and investors. BUDMA 2018 International Construction and Architecture Fair was held in Poznan from Jan. 30 to Feb. 2. (Xinhua/Jaap Arriens)