Hangzhou Fuyang HENT Electromechanical Engineering Co., Ltd. HENT, found 1996 and located in Hangzhou PR China, has over 15 years professional technology and experience in design,manufacture,sales and service for industrial machinery, particularly for cement industrial equipment. We are able to supply valves solution for dry bulk material handling,particularly for cement industry. .Our main products include Electric Ball Valve (Aeration contorl for fluidization air for aerating the silo ...