brazing welding rods 1.alloy:China:BCu91PAg. America:BCuP-6. 2.easy flow,good solderability,plastic nature,better strength. Contain ... , evaporator, heatExchanger and water heater ect.JcuP-3Zhong: 2026.1-6.8-balance710820Contain lessPhosphorus, goodPlatic nature, a littleHigher melting point.Can ...