... and filter knowledge:Shanghai BaosteelWuhan Iron and Steel Group Corporation and Philips company use our filters and filtration equipments. ... So it can be widely used in petroleum and chemical industry, chemical fiber, medicine, food and so on.The main media ... : water, ammonia, oil hydrocarbon products;2. Corrosively medium for chemical production, such as: sodium hydrate, caustic soda, sulfuric acid, ...