Solder wire, Our 'bond' series of resin cored solder wire was first introduced in the market in 1974. Ever since we have been constantly contributing to the electronic industry with our diverse types of solder wires, developed to meet the various requirement for specialized applications. Both RMA and RA type cored wire have excellent wetting action of core flux and an even more important and significant fact is that the flux is totally non-conductive and non-corrosive. 'bond" resin cored series of solder wire meets all the National, International and MIL std. QQ-S 571,