DIBT certificate – screws for fibre cement sheets
Certification by the German DIBT institute for new screw models for fibre cement sheets obtained https://www.landinispa.com/wp-content/uploads/2022/05/Bescheid.Z-31.4-188.pdf https://www.landinispa.com/wp-content/uploads/2022/05/Bescheid.Z-31.4-231.pdf