新材料50ETF（159761）涨超2%，行业格局重塑与新材料需求受关注

Group 1 - The new materials sector is experiencing a significant transformation, with the magnesium industry seeing a concentration in competition and a decrease in the magnesium-aluminum ratio below 1, indicating improved cost-performance of magnesium alloys [1] - Traditional magnesium alloys have disadvantages such as poor corrosion resistance and immature processing technology, but advancements in semi-solid forming equipment have enhanced the mechanical and corrosion properties of magnesium alloy products [1] - The magnesium-aluminum ratio has reached a historical low, and with policy encouragement and expansion from leading manufacturers, it is expected to stabilize at a relatively low level, indicating a trend for magnesium to replace aluminum in various applications [1] Group 2 - The New Materials 50 ETF (159761) tracks the New Materials Index (H30597), which focuses on the new materials industry by selecting representative listed companies involved in advanced basic materials, key strategic materials, and cutting-edge new materials [2] - The index aims to reflect the overall performance of listed companies in the new materials sector, emphasizing high growth and innovation characteristics, particularly in the chemical, non-ferrous metals, and high-tech materials fields [2]