site.btaBulgarian Entrepreneur Creates First Liquid Thermometer
![Bulgarian Entrepreneur Creates First Liquid Thermometer](/upload/486146/TOM.jpg?l=1000)
![Bulgarian Entrepreneur Creates First Liquid Thermometer](/upload/486146/TOM.jpg?l=1000&original=5398abd31eaf54c350ea74947e203d4001cc5903)
Bulgarian Entrepreneur Georgi Mutafchiev created an innovative liquid thermometer, the world's first product that shows changes in body temperature throughout the day, Mutafchiev told BTA.
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