What is the difference between rosin-core and resin-core wires in soldering pencils (not electronics)? - Quora
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TOWOT Tin Lead Rosin Core Solder Wire for Electrical Soldering, Content 1.8% Solder Flux Sn60-Pb40 (1.0mm, 50g) - Amazon.com
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Amazon.com: Solder Wire, 0.5mm 250g 60/40 Tin Rosin Core Solder Wire, Rosin Core Tin Solder, Roll of Welding Wire for Computer Repair Electrical Soldering : Tools & Home Improvement
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