Winner electronic was established in 2005 in Wuhan ,Hubei province, China. Winner electronic is the first company in China to develop, produce and sell small automotive electric ball valve and put the ball valve for central air condition system. After first generation, second generation, third generation improvement, our products are now widely used for HVAC system, hospital equipment system and environmental control system. All our valves are our patent products and they are CE, ROSH certified. Winner has developed to be the most professional which has the longest experience in electronic...