With the construction works having begun in 1976 in Çardak district on the shore of Acıgöl, located within the borders of Denizli - Afyonkarahisar Province, the facility launched production for the very first time in 1977.  

Although the Refined Sodium Sulphate production capacity was initially 15,000 tons/year, this was expanded in 1984 to 25,000 tons/year.  

In the face of increasing demands, SODAŞ decided to purchase a Refined Sodium Sulphate Production Facility from Hoechst AG/Germany in 1997. The purchased facility was disassembled in Germany and reassembled in Denizli - Çardak, thus further expanding the total Refined Sodium Sulphate production capacity to 58.000 Tons/Year.  

Commissioned in 1998, the facility carved itself a prominent place among the world's leading Refined Sodium Sulphate producers thanks to its increased capacity, and made a significant impact on the development of both national and local economy.  

As a result of these investments, Sodaş Çardak Refined Sodium Sulphate Facilities maintains its operations on an outdoor area of 152.963 m² and indoor area of 16,803 m².

With the investments made in the production pools with the aim to meet the excess demand in both the domestic and foreign markets, SODAŞ currently boasts a total Pre-evaporation and Production pool capacity of approximately 9,850,000 m².