... 4.Strict production process and professional sales ProductionnameHigh Power Ceramic Tube Heat Resistor,Wirewound Resistor, Power Resistor, Braking Resistor ... Copper wire or chrominum alloy wire is wound on the ceramic tube coated with non-flammable resin,good dissipation ,high stability ... rating,high overload.3.The DDR series own higher resistance value than the DQR series.4.Widely used in power supply ...