Group 1 - The A-share market has seen a surge in investment related to anti-involution themes since July 15, 2025, with the chemical ETF (159870) doubling its scale to reach 4.2 billion CNY in just three weeks [1] - The chemical sector has experienced a three-year downtrend, with the Producer Price Index (PPI) in deflation for 33 consecutive months, indicating a potential end to this historical deflation cycle [4] - The fixed asset investment in the industry turned negative for the first time in May 2025, signaling the end of the capacity expansion cycle, which historically leads to price increases within 6-12 months [4] Group 2 - The chemical ETF has seen a significant increase in shares, with over 4 billion shares added in the past three weeks, making it the most active cycle-related ETF in terms of capital inflow [5] - The chemical ETF closely tracks the CSI segmented chemical industry theme index, which consists of seven sub-indices reflecting the overall performance of major companies in related sectors [5] - As of July 31, 2025, the top ten weighted stocks in the CSI segmented chemical industry theme index accounted for 43.54% of the index, including companies like Wanhua Chemical and Yilong Co [5]