Global Custom Assays Market By Type (Activity Assays , Competitive Assays , ELISA Assays , Sandwich Assays , and Screening Assays), By Application (Academic & Research Institutes , Life Science Industries , Biotechnology Companies , Diagnostic Centers , Contract Research Organizations , and Food & Beverage Companies), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029