塑料板块2月2日跌3.23%，中研股份领跌，主力资金净流出7.08亿元

Market Overview - The plastic sector experienced a decline of 3.23% on February 2, with Zhongyan Co. leading the drop [1] - The Shanghai Composite Index closed at 4015.75, down 2.48%, while the Shenzhen Component Index closed at 13824.35, down 2.69% [1] Individual Stock Performance - Notable gainers included: - Bofei Electric (Code: 001255) with a closing price of 40.43, up 1.99% [1] - Guangchuan Co. (Code: 001333) with a closing price of 26.90, up 1.43% [1] - Significant decliners included: - Zhongyan Co. (Code: 688716) with a closing price of 38.31, down 8.13% [2] - Xiangyuan New Materials (Code: 300980) with a closing price of 34.42, down 7.00% [2] Trading Volume and Capital Flow - The plastic sector saw a net outflow of 708 million yuan from institutional investors, while retail investors contributed a net inflow of 419 million yuan [2] - The total trading volume for the plastic sector was significant, with individual stocks showing varied performance in terms of capital flow [3] Capital Flow Analysis - Key stocks with notable capital flow include: - Shangwei New Materials (Code: 688585) with a net inflow of 29.45 million yuan from institutional investors [3] - Yinhui Technology (Code: 300221) with a net inflow of 17.20 million yuan from institutional investors [3] - Conversely, stocks like Yuyue Technology (Code: 603879) experienced a net outflow of 10.02% from retail investors [3]