Good Quality Sponge Of "Rongsheng"Brand Specialized in kinds of sponge more than 13 years,we are Supplier Assessment by ... quality certification system.B: The material :PU ( Polypropylene) C: The density of sponge:22kgs/M3, 25kgs/M3, 28kgs/M3, 32kgs/M3 ,42kgs ... Pan-tone Card.I: The shape: Square,round,heart,kinds of animal,printing sharp,eight shape,oval-shaped,and welcome to ...