2005CSN 725250-2005 Chemical - resistant building stoneware - Requirements and test methods
1993CSN 72 6028-1993 Shape and dimension tolerances and tolerances of external defects of ceramic products
CSN 72 6028-1993 Shape and dimension tolerances and tolerances of external defects of ceramic products was changed to CSN 725250-2005 Chemical - resistant building stoneware - Requirements and test methods.