Which metrics to track during a market test depends on the test objective, but for export-oriented manufacturing businesses, the following categories of numbers are typically most valuable: First, funnel metrics—number of potential customers reached, actual inquiries received, conversion rate from quotation to order. These show where the most customer loss occurs; Second, pricing metrics—average unit price customers accept, difference ratio between selling price and quotation price, frequency of price negotiations. These help determine if pricing strategy is appropriate; Third, customer concentration—the percentage of total revenue from the top three customers. Excessive concentration indicates risk; Fourth, channel effectiveness—inquiry quality and conversion rate from different trade shows, channels, and regions. This helps allocate resources to the most promising areas. These metrics should be decided for tracking before the test begins, not excavated from data afterward, otherwise it's easy to interpret results by selecting only numbers that favor yourself.