... has passed the SGS,ROHS,UL,CA117,BS5852 Certificates.1) Filter foam2) material: 100% polyurethane3)Reticulated and open cell4)excellent ... Polyester foam,polyether foam, top of quality,reasonable price and great creditstanding.Filter foam products are widely used for aquarium,pet, ... water pump,cleaning and filter business. 1 hardness: 20-100ptc 2Dimensions:make as your ...