During the production of battery raw materials such as carbon nanotubes, a large amount of by-products such as hydrochloric acid, nitric acid, phosphoric acid, and hydrofluoric acid are produced. We have invented membrane separation technology that can achieve on-site regeneration of these acids, allowing the regenerated acids to be returned to the starting point of the production line as pure acids, thereby achieving a savings of more than 90% of the acids. Our company can provide design solutions and complete equipment.