软木/复合地板基材 密度：450-550kg/m 中细 规格：305MMX305MMX（3-6MM厚度可以定尺） 用途：具有保温绝热、隔音减震、防滑耐磨、防水防潮、弹性好、易于清理、独一无二的天然 cork underlayment density:200-220kg/m3 size:305x30x3-6mm purpose:cork underlayment can be installed under any kines of floor covering as best choice for sound insulation and moisture absorption and reduction,which also can prevent the flooring covering and the subfloor from rot and degration.