Centralized production of pots for glass melting began in the Czech part of the Austro-Hungarian empire in the first half of the 1890s. At that time, the first pot-making plant was founded at a small village called Hrob situated at the foot of the Erzgebirge mountain range. The original building where the production started is still standing but it was rebuilt recently and converted into offices serving the needs of the company KERAMO PLUS.
     The dynamic development of the glass industry in Bohemia soon resulted in the increase in the capacity demands. To meet this challenge the company had to expand its production facilities, add a new manufacturing plant, the milling shop and auxiliary premises.
     The wave of nationalization in 1948 also hit the pot making company but, fortunately enough, the production of pots could continue and the plant became a part of the Crystalex group. Later, it was transferred to Teplotechna specialized in the erection of high-temperature equipment (furnaces).
     The positive outcome of a R & D program in 1972 helped introduce the manufacture of extruded pots. There was also a plant founded by Adolf Pöhner in Teplice in 1924 and specialized in the manufacture of slip-cast pots; the production of this type of pots was transferred to the Hrob plant in 1985.
     There was a change in ownership in 1989 when Teplotechna sold the pot making plant and a new share-holding company called Kostany Glassworks & Pot Making was formed (the Czechoslovak state represented by the Fund of National Wealth was the only owner).
     Poor management of the new company and inefficient supervision by statutory authorities resulted in a state of heavy indebtedness and, finally, the company was declared bankrupt in January 1998. However, fortunately again, the production of pots was not affected by this process.
     Tendering for the bankrupt company began in 2000 and the company Kostany Glassworks & Pot Making was eventually privatized in July 2000. The financial situation of the privatized company becomes gradually more stable thanks to a variety of changes aimed at improving the production and the management.
     The share-holding company KERAMO PLUS is founded on December 5, 2001 as a successor and upholder of the long tradition in the manufacture of pots and refractory articles for glass industry.
     The goal of the new executive board and management composed of three members is to create optimum conditions for the best-possible quality of the company products and for their wide use in Czech glassworks and abroad, too.