Selecting the right demo case requires balancing portability, versatility, and technical accuracy. A professional case should feature a durable aluminum alloy or high-impact ABS exterior to withstand frequent travel. Internally, prioritize cases with customizable foam inserts and a variety of socket types (e.g., E27, E14, GU10, G9) to accommodate different bulb styles. Ensure the case includes a built-in power meter that displays real-time data such as Wattage, Voltage, Current, Power Factor, and Annual Energy Consumption, as these metrics are critical for demonstrating the ROI of LED upgrades to B2B clients.