Shenzhen XianmaTechnology Co.,Ltd. Our first model of water cooling fan hits the market well in 2017, then we’ve got the experience and confidence and released new products every year, in 2020 and 2021, our products were choosed by one of LENOVO authorized dealer, Despite the COVID-19, but they got a big success in china by the sales volume of over 300k sets of fans yearly. Now this type of portabl...