Global Defoamer Market By Type (C8-C10, C10-C12, and C12-C18), By Application (Pulping & Papermaking, Oil & Gas, Paints & Coatings, Food & Beverages, Water & Waste Water, Pharmaceuticals, and Pharmaceuticals), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028