包装印刷板块2月3日涨1.35%，康欣新材领涨，主力资金净流出8388.63万元

Group 1 - The packaging and printing sector increased by 1.35% on February 3, with Kangxin New Materials leading the gains [1] - The Shanghai Composite Index closed at 4067.74, up 1.29%, while the Shenzhen Component Index closed at 14127.1, up 2.19% [1] - Key stocks in the packaging and printing sector showed significant price increases, with Kangxin New Materials rising by 6.96% to a closing price of 3.84 [1] Group 2 - The sector experienced a net outflow of 83.89 million yuan from institutional investors, while retail investors saw a net inflow of 131 million yuan [2] - Among individual stocks, Shunpiao Co. had a notable net inflow of 79.68 million yuan from institutional investors [3] - The overall trading volume and turnover in the packaging and printing sector were substantial, indicating active market participation [1][2]