Global Polymeric Ferric Sulfate Market By Type (Hydrogen Peroxide Oxidation , Potassium Chlorate (Sodium) Oxidation Method , and Sodium Hypochlorite Oxidation Method), By Application (Industrial Water Purification Treatment , Drinking Water Purification Treatment , and Urban Sewage Purification Treatment), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029