I dont have personal experience using bleach on Nano Glass Stone, but I can provide general information. Bleach may remove some stains from Nano Glass Stone, but its important to use it carefully and to dilute it properly with water. If you decide to use bleach, test it on a small, inconspicuous area first to make sure it doesnt damage or discolor the stone. Its also a good idea to wear gloves and protective eyewear, and to ventilate the area well. Additionally, there are specialized stone cleaners and stain removers available that are formulated for use on natural stone surfaces, so you may want to consider using one of those products instead of bleach.