Hui Tong Electronic Co., Ltd Established in 1998,which lies in Dongguan city, China, is manufacture all kind of cooling fan,cpu cooler,ac fan,dc fan from its designing, developing, producing to selling.The operating voltages of our fans from 5VDS to 48VDC,110VAC to 380VAC.Most of our products are adopted with accessories for Personal Computer & Related applications to other functional subassemblies for home appliance,AV products, and other products which need better cooling,dehumidifying, and deodorizing capability.All productors have the safety standard of UL,CE.TUV,CUL and ROHS.