The biggest problem with maintaining a catalog via PDF or Excel is: whenever prices, MOQ, or inventory changes, you have to remake the file and resend it to every buyer—it's time-consuming and easily leads to version confusion. To improve this process, the first step is to centralize product data in a place where you can control 'who sees what conditions,' so different buyers see pricing and MOQ tailored to them, not a static file shared by everyone. The second step is to make inventory status and specification updates reflect directly in the catalog—whenever a buyer opens it, they see the latest information without needing manual notification from sales. This way, when the market moves quickly, one adjustment syncs to all buyers, drastically cutting communication costs. Patisco's Product Management and Trading Condition Setting features address this problem: you set custom display conditions and quotation rules for each connected buyer, so when they log in they see a page personalized just for them.