... Used the auto 2.Environmental protection 3.Purify air catalytic carrier: OCr21Al6 1)Heating Resistance Wire:We are ... Ferro-Chrome Alloys (Ferritic Alloys), Nickel-Chrome Alloys (Nichrome alloys), Copper Nickel Alloys (Constantan Alloys)In the form ... ): OCr21AL4, OCr21AL6, OCr25AL5, OCr23AL5, 1Cr13AL4, OCr21AL6Nb, OCr27AL7Mo2. Nickel-Chrome Alloys (Ni-Cu Alloys): Cr20Ni80, Cr15Ni60, Cr30Ni70, Cr20Ni30 ...