Hot Cold Normal (Crystal Water) water filter machine is a high-quality water filter system that provides clean, safe, and great-tasting drinking water. It features a multi-stage filtration system that removes impurities, chlorine, and other contaminants from your tap water. The machine also has a hot and cold water dispenser, allowing you to enjoy hot or cold water at the touch of a button. It is easy to install and maintain, making it a great choice for any home or office.