DIN EN 14891:2017 在用粘合剂粘合的瓷砖下面使用的液体应用不透水产品 要求、测试方法、性能稳定性的评估和验证、分类和标记
Liquid applied water impermeable products for use beneath ceramic tiling bonded with adhesives - Requirements, test methods, assessment and verification of constancy of performance, classification and marking