包装印刷板块8月19日涨0.51%，康欣新材领涨，主力资金净流出4177.87万元

Core Viewpoint - The packaging and printing sector experienced a slight increase of 0.51% on August 19, with Kangxin New Materials leading the gains, while the overall market indices showed minor declines [1]. Group 1: Market Performance - The Shanghai Composite Index closed at 3727.29, down 0.02%, and the Shenzhen Component Index closed at 11821.63, down 0.12% [1]. - Kangxin New Materials saw a significant increase of 10.00%, closing at 2.97, with a trading volume of 1.1794 million shares and a transaction value of 335 million yuan [1]. - Other notable performers included Shanghai Ailing, which rose by 4.44% to 9.17, and Yinglian Co., which increased by 3.16% to 17.63 [1]. Group 2: Capital Flow - The packaging and printing sector experienced a net outflow of 41.7787 million yuan from institutional investors, while retail investors saw a net inflow of 184 million yuan [2]. - The top stocks by net inflow from institutional investors included Kangxin New Materials with 70.8235 million yuan and Shengtong Co. with 66.5221 million yuan [3]. - Conversely, significant net outflows from retail investors were observed in stocks like Shanghai Ailing and Shengtong Co., with outflows of 30.0085 million yuan and 31.9377 million yuan, respectively [3].