The Slovak Republic, a part of former Czechoslovakia, belonged to the eight world’s largest producers of PCB commercial mixtures. More than 21,000 tonnes of PCBs were produced by Chemko Strážske under the brand names Delor, Hydelor, and Delotherm from 1959 to 1984, and broadly utilized in former Czechoslovakia for production of capacitors, paints, and varnishes. About 46% of the produced PCB was exported mainly to former East Germany. The rest (11,613 tonnes) was used in the territory of former Czechoslovakia.