Plovdiv Province others. Industry is very well developed: ferrous metallurgy near Plovdiv; thriving electronics industry in Plovdiv, Saedinenie, Voivodinovo, Radinovo and other villages in the area; agricultural machinery (tractors) in Karlovo; weapon and military plants in Sopot, Karlovo, Plovdiv; chemical industry in Plovdiv, Asenovgrad; food industry is developed almost everywhere, most notably in Plovdiv and Asenovgrad (wines). Tourism is a growing industry with the rich cultural heritage of the province and the numerous mineral springs which are of international importance. Plovdiv Province Plovdiv Province (: "Oblast Plovdiv", former name Plovdiv okrug) is a province in central southern Bulgaria. It comprises 18 municipalities
Plovdiv Airport and Frankfurt) in 2015 after two years of stable operation. The government have started the first concession procedure back in 2011, but there were no candidates for it. The second attempt for the concession was made in the spring of 2016 when the government have opened a tender for a 35 years concession of the airport, but the tender was shortly cancelled for non-compliance with European rules. In December 2016 the government opened the 3-rd tender for the concession. In the new procedure 3 companies have made the bid for the airport - Silk Road Plovdiv Airport, Consortium Plovdiv Airport