... 45mm 3.density:90-6000g/m2 wear-resisting,heat-retaining mattress felt1. It is made of cotton,polyester and PP2 ... Technique of productionBy combing ,overlapping,needling ,the felt formed, and by needle puncturing to achieve thickness and then enter the main ... proof,cold-proof,filter,Useshoes,insole,insiden lining of boot;Mattress ,cold-proof tent,vegetable awningPaymentT/TDelivery datedepending on the ...