... passed ISO 9001:2008 quality certification system.B: The material :PU ( Polypropylene) C: The density of sponge:22kgs/M3, 25kgs/M3, ... J: MOQ:5000pcs/ eachAdvantages:1.We make the raw material by ourself,so we can control the quality,competitive price and delivery time.2 ... .The goods sell well in Europe,USA,Canada, ...