... logo on products.五、Company Shenyang Great Wall Filtration Cardboard Co.,Ltd is one of main global Filter-paper Cardboard suppliers, ... , edible oil, edible vinegar, instant noodles, colloid, petroleum, chemical industry, electric power, water treatment, paint, dope and many other areas ... in the future.六、FAQ :1.Are you a manufacturer or trading company ? We are professional manufacturer in China, and ...