Group 1 - The semiconductor etching sector is expected to see a significant increase in the usage and importance of equipment due to advancements in multi-pattern lithography, 3D stacking in storage, and transistor structures [1] - Companies like North Huachuang are the only domestic firms to achieve 5nm etching machine coverage, indicating a strong position in the market [1] - Zhongwei Company has plasma etching equipment that is already utilized in the manufacturing of 7nm and 5nm integrated circuits, showcasing its technological capabilities [1] Group 2 - New materials and products are being developed, such as copper etching liquids by Xinjubang, which have undergone iterative validation [2] - The industry is seeing a focus on electronic-grade etching liquids, with companies like Xingfa Group producing 20,000 tons per year [2] - Key components for etching and thin film deposition are being successfully applied in advanced processes, including 7nm technology, by companies like Fuchuang Precision [2]