Yinsheng ( Warmtone) Electricity & Hardware Factory is  among the earliest producers in aquarium line in China.  specializied in  manufacturing more than 30 series of  aquarium heaters, electrical  thermostats ,  UV  lamp,   electronic, cooler.   Auto fish feeder, ornamnets  and equipment for aquarium plants, Parts of the  products have got national patents and successtully entered Europe, U.S.A West  Asia and Hongkong. Besides, the Submersible series heaters have passed the CE test.  In recent years,  experienced engineers are employed to set a development to make products even better.