... logo on products.五、Company Shenyang Great Wall Filtration Cardboard Co.,Ltd is one of main global Filter-paper Cardboard suppliers, ... , clarified cardboard, fungus-eliminated cardboard, active carbon cardboard, industry oil filter paper, plant oil filter paper,KFC filter paper ... believing.3. Will your company supply samples? Yes, we do. Samples free, freight collect, freight cost will be refund ...