▶ Wha-chan APP (Wha-chan App) Information -Location-based life industry guide service app for users (users) -Location-based delivery, restaurant search function -Event notification service function (Receive function, reception control function) -Wildflower photo (original view, save to my phone, share function) -QR code recognition function -Free movie discount ticket for the 4 major theaters nationwide ▶ Additional Information -Cost-effective solution for customer satisfaction and business suc