The ink is the guts of a copyright bill detector pen. Higher-quality ink should really respond immediately and distinctly to copyright bills, leaving a clear, darkish mark on copyright paper. Search for pens that explicitly mention the type of ink applied and its dependability in pinpointing many forms of copyright https://antibreezebanknotes99987.prublogger.com/37750726/the-greatest-guide-to-100-dollar-hong-kong