Good Quality Sponge Of Rongsheng Brand Specialized in kinds of sponge more than 12 years,we are Supplier Assessment by TUV Passed RHOS certificate,AZO Free, Washing certificate.Detailed Product Description:A: The product passed ISO 9001:2008 quality certification system.B: The material :PU ( Polypropylene) C: The density of sponge:22kgs/M3, 25kgs/M3, 28kgs/M3, 32kgs/M3 ,42kgs/M3D: The Item No:RS- ...