Engineering activity was provided by the Association of Engineering (Keramoprojekt, a.s., Trenčín, Keraming, v.o.s., Trenčín, Chempik, a.s., Bratislava).
The engineering services were supplied by the Association of Engineering (Keramoprojekt, a.s., Trenčín, Keraming, v.o.s., Trenčín, Chempik, a.s., Bratislava).