Global Zinc Borate Market By Type (2ZnO·3 B2O3·3)5H2O , 2ZnO·3 B2O3 , 4ZnO·B2O3·H2O , 4ZnO·6B2O3·7H2O , and 2ZnO·2B2O3·3H2O), By Application (Flame Retardant , and Compound Formulation), By Region and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019–2028