Beijing Daiting New Material Technology Co., Ltd. We are a production factory that provides phase change cooling vests, for all kinds of people. With the patent of this unique technology, our company specializes in developing and producing light weight and nice fitting body cooling suit for all kinds of people who need to against heat stress. These cooling jackets could produce cooling temperature in a few minutes and hold a comfortable temperature for the user. We believe our products will be helpful for the people whom need to work under the hot environment.