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Black Dot Patch [Double Patch, Double Sided Patch] The Black Dot patch, also known as the double-sided patch[double side patch], was developed and patented both domestically and internationally by the South Korean company Black Dot, marking a world first. Unlike conventional patches that could only have an emblem on one side, this innovative patch allows use on both sides, significantly increasing convenience. It has been widely praised as a groundbreaking innovation and has garnered significant attention online, with over 15 million views recorded.