Auto tds controller ro system manufactur in Rajkot It sounds like you're interested in the manufacturing of an Auto TDS (Total Dissolved Solids) Controller for RO (Reverse Osmosis) Systems. An Auto TDS controller is used in reverse osmosis water filtration systems to automatically adjust the TDS level, maintaining water quality within a desired range by controlling the flow of water through the system. If you're looking to manufacture or learn about the production process for these devices, here's a general overview of the key steps involved: