... slippers and so on5: Certification ISO9001 …………………………………………………………………………………… wool felt filters specification ModelMaterial Density(g/m2)Thickness(mm)ColorLength*Width(mm ... Felt Co., Ltd. is located in Nangong City,Hebei Province.Our company adheres to the "Science-Frist, ... Dingfeng Felt Co., LtdAddress: Qingnian Road ,Nangong City,Hebei Province,China(Mainland)Zip code: 055750Tel:86-15127923894Fax:86 ...