Core Viewpoint - Wharton Technology (000920.SZ) plans to invest in reverse osmosis membranes and polyphenylene sulfone materials, focusing on high-end products and multifunctional high-performance materials with broad applications [2] Group 1 - The main products of the proposed investment project are reverse osmosis membranes and polyphenylene sulfone materials [2] - The focus on reverse osmosis membranes is on high-end categories [2] - Polyphenylene sulfone is recognized as a multifunctional high-performance material with wide application fields [2]