St. Technisch Centr. v.d. Keramische Industrie (TCKI)
VELP GLD, NL
EN 772-22 VLP 29 Clay roof tiles Determination of freeze-thaw resistance; heat extraction by convection ANA-KO-19 EN 539-2 VLP 30 Clay pavers Determination of freeze-thaw resistance; heat extraction by convection ANA-KO-19 An