UV Properties: If you shine an ultraviolet light over a Invoice, the security thread will glow. Each and every denomination glows another color. The copyright detector pen is amazingly uncomplicated. It has an iodine Option that reacts with the starch in Wooden-based mostly paper to make a black, darkish blue https://hongkong100dollar45047.tkzblog.com/38646075/the-single-best-strategy-to-use-for-100-hong-kong-dollar