The most common problem at trade shows is: customer information comes from handwritten notes or business cards, and when you get back to the office, you realize the data is incomplete or you've forgotten what each customer asked about. The fundamental solution is to set up an entry point at the booth (for example, a QR code) where customers can scan to view product specifications and self-submit their inquiry requirements. All records go directly into the system at that moment—no relying on salespeople to handwrite notes or sort things out afterward. After the show, all inquiries are in one place, so you can decide which quotations and products to make available based on what customers provided, without having to reconstruct the context from personal memory or patched-together emails. This approach solves both the "scattered data" problem and the "high cost of following up on new customers" problem at once.