Bosch Thermotechnology is the top supplier of high-quality,environmentally-friendly indoor energy-saving HVAC and comfortable hot water energy management solutions in Europe.It obtained 70 patent applications for new products in 2017,in technology research and development.The total investment exceeds 163 million euros.Headquartered in Wetzlar and Stuttgart,Bosch Thermotechnology now builds more than 20 plants in Europe,Africa and Asia,and achieved sales of 3.4 billion euros in 2017.