Kent Supreme RO Water Purifier (RO+UF+TDS Control) The Kent Supreme RO Water Purifier, which we supply, is a combination of RO, UF, and TDS Controller. The major concern of our firm is to deliver a quality content, thus, we check the product quality on several counts at all stages. Well documented, secure, and practical, our payment procedures are client friendly. We offer our clients with different online and traditional options to make payments and ensure they are convenient.