2023DIN EN 622-4:2023-09 Fibreboards - Specifications - Part 4: Requirements for softboards; German and English version prEN 622-4:2023 / Note: Date of issue 2023-08-11*Intended as replacement for DIN EN 622-4 (2019-08).
2019DIN EN 622-4:2019-08 Fibreboards - Specifications - Part 4: Requirements for softboards; German version EN 622-4:2019
2019DIN EN 622-4:2019 Fibreboards - Specifications - Part 4: Requirements for softboards