2014DIN EN 15534-4:2014 Composites made from cellulose-based materials and thermoplastics (usually called wood-polymer composites (WPC) or natural fibre composites (NFC)) - Part 4: Specifications for decking profiles and tiles; German version EN 15534-4:2014
2007DIN CEN/TS 15534-3:2007 Wood-plastics composites (WPC) - Part 3: Characterisation of WPC products; German version CEN/TS 15534-3:2007