化学纤维板块8月19日跌0.78%，中复神鹰领跌，主力资金净流出1.36亿元

Group 1 - The chemical fiber sector experienced a decline of 0.78% compared to the previous trading day, with Zhongfu Shenying leading the drop [1] - On the same day, the Shanghai Composite Index closed at 3727.29, down 0.02%, while the Shenzhen Component Index closed at 11821.63, down 0.12% [1] - A table detailing the individual stock performance within the chemical fiber sector was provided [1] Group 2 - The net outflow of main funds in the chemical fiber sector amounted to 136 million yuan, while retail funds saw a net inflow of 125 million yuan [2] - The net inflow of speculative funds was recorded at 10.8252 million yuan [2] - A table showing the fund flow for individual stocks in the chemical fiber sector was included [2]