Robot barista Billie is a representative of Sangwha's robot barista. From selecting beans to grinding, tamping, espresso extraction, and adding milk and syrup, the actual barista's actions are carried out in the same process by the robot. Billie's espresso machine is the same as a professional barista's, so it can satisfy different customer needs. However, the extraction speed is only 49 seconds per cup, exceeding the barista's productivity. Billie is a proven solution with many strengths including high productivity, non-face-to-face sales, 24-hour unmanned operation, and eye-catching performance. In addition, this Untact (COVID-19) sales system is available for everyone to operate.