午评：沪指涨0.29% 造纸板块涨幅居前

Core Viewpoint - The A-share market showed mixed performance in early trading, with the Shanghai Composite Index slightly up by 0.29%, while the Shenzhen Component and ChiNext Index experienced declines of 0.11% and 0.37%, respectively [1] Market Performance - As of the midday close, the Shanghai Composite Index stood at 3952.50 points, reflecting a gain of 0.29% [1] - The Shenzhen Component Index was reported at 13472.22 points, down by 0.11% [1] - The ChiNext Index closed at 3217.47 points, showing a decrease of 0.37% [1] Sector Performance - The leading sectors in terms of gains included: - Paper industry with a rise of 5.06%, total trading volume of 1179.55 million hands, and a net inflow of 3.45 billion [2] - Military electronics increased by 2.66%, with a trading volume of 1988.45 million hands and a net inflow of 16.78 billion [2] - Main industrial aggregates rose by 2.53%, with a total trading volume of 1925.20 million hands and a net inflow of 30.38 billion [2] - Electric machinery gained 2.45%, with a trading volume of 427.63 million hands and a net inflow of 5.43 billion [2] - Insurance sector increased by 2.30%, with a trading volume of 151.56 million hands and a net inflow of 8.18 billion [2] - The sectors that faced declines included: - Energy metals decreased by 2.68%, with a trading volume of 228.14 million hands and a net outflow of 19.82 billion [2] - Precious metals fell by 2.67%, with a trading volume of 309.80 million hands and a net outflow of 9.64 billion [2] - Small metals dropped by 1.13%, with a trading volume of 635.51 million hands and a net outflow of 8.07 billion [2] - Industrial metals declined by 1.07%, with a trading volume of 1719.83 million hands and a net outflow of 17.05 billion [2]