As part of a nationwide campaign across 21 provinces targeting traditional wet markets, with over 500 Push Sales and Gift Redemption activities, Truong Doan was responsible for developing the customer data collection app. The application was specifically designed to capture detailed records of bills, redeemed gifts, and buyer information such as name, phone number, and shopping behavior. Thanks to this platform, the data collection rate reached a perfect 100%, enabling the brand to gain valuable insights into consumer behavior and build a high-quality customer database for future marketing activities.