Five Heat-pump Technologies of Tongfang Artificial Environment earned national patent of invention

Recently, Tongfang Artificial Environment made several breakthroughs on patent of invention. This time, five heat-pump technologies that applied by Tongfang Artificial Environment and Wuxi Artificial Environment has earned national patent of invention title. These patents are Water-source Heat pump s mixture device, four-way solenoid valve device, throttle-type cooling device, and improved flash evaporator.