Dyson HP05 hot and cold bladeless fan. The Dyson HP05 hot and cold bladeless fan can not only absorb more harmful gases and bring a healthier air environment to users, but can also quickly heat and cool. It can be said to be an air purifier and an electric fan. The functions of fans, electric heaters and other electrical appliances are integrated into one, and the overall performance is very powerful. Anyway, I think it is worth buying, and the price/performance ratio is very high. Dyson Technology Co., Ltd. is a British international company specializing in the production and research and development of home appliances. It pioneered the world's first "bladeless fan" product and applied for invention and utility model patents in many countries including China. Dyson vacuum cleaners are built with Dyson’s own patented Radial Root Cyclone? technology. Dyson spends 10 to 15% of its sales revenue on research and development every year. This strategy has resulted in more than 3,000 patents and more than 500 inventions.