造纸板块8月13日跌0.38%，ST晨鸣领跌，主力资金净流出5522.5万元

Group 1 - The paper sector experienced a decline of 0.38% on August 13, with ST Chenming leading the drop [1] - The Shanghai Composite Index closed at 3683.46, up by 0.48%, while the Shenzhen Component Index closed at 11551.36, up by 1.76% [1] - A detailed table of individual stock performance in the paper sector is provided [1] Group 2 - The paper sector saw a net outflow of main funds amounting to 55.225 million yuan, with retail funds showing a net inflow of 69.2512 million yuan [2] - The net outflow from speculative funds was 14.0262 million yuan [2] - A detailed table of fund flows for individual stocks in the paper sector is included [2]