Kayalar group was established in 1970 to produce semi manufactured material for armature. Afterwards the Kayalar Pres Ltd. Şti. company was founded to continue its activity by manufacturing semi products and fittings made of brass. The KAS brand name was registrated in 1994, hence our radiator valves and brass rakor products were presented to the domestic market as our own brand. In 1999 our group companies moved to their new production plant in the area of Istanbul’s Sancaktepe.