PENTAGARD is a company that provides cleaning and coating services to clean and protect your glass from water and mushroom crust. We realize that glass is very susceptible to acidic liquids and chemicals such as soaps, rainwater, etc. which can then lead to spots of water, crust and fungi that are very difficult to clean. Stains and crust on the glass that has been attached for a long time will not be cleaned only with ordinary glass cleaners sold in the market. Therefore, we present as a solution to restore the beauty of your glass. And with the latest coating technology, we can also protect the new glass to keep it always beautiful avoid the permanent water crust and mushrooms with very minimal care. pentagard.com