Nanotech is a South African water treatment company that was started in 2006. It focuses on providing customized water treatment systems and solutions using innovative technologies. Nanotech works with various industries including power generation, mining, pharmaceuticals, food and beverage. It has experience implementing projects involving reverse osmosis, ultrafiltration, wastewater treatment and provides ongoing service and maintenance. The document provides details on Nanotech's offerings, experience, and potential areas where it can help customers reduce water usage and treatment costs.