塑料板块9月3日跌2.49%，上纬新材领跌，主力资金净流出10.03亿元

Market Overview - The plastic sector experienced a decline of 2.49% on September 3, with Shangwei New Materials leading the drop [1] - The Shanghai Composite Index closed at 3813.56, down 1.16%, while the Shenzhen Component Index closed at 12472.0, down 0.65% [1] Stock Performance - Notable gainers in the plastic sector included: - Guofeng New Materials (Code: 000859) with a closing price of 7.10, up 6.13% [1] - Jinfake Technology (Code: 600143) with a closing price of 16.09, up 3.41% [1] - Nengzhiguang (Code: 920056) with a closing price of 30.38, up 3.23% [1] - Significant decliners included: - Shangwei New Materials (Code: 688585) with a closing price of 82.66, down 15.31% [2] - Henghe Precision (Code: 300539) with a closing price of 29.01, down 8.14% [2] - Hechang Polymer (Code: 832089) with a closing price of 19.22, down 6.20% [2] Capital Flow - The plastic sector saw a net outflow of 1 billion yuan from major funds, while retail investors contributed a net inflow of 291 million yuan [2] - Major funds showed a net inflow in: - Jinfake Technology with 116 million yuan [3] - Guofeng New Materials with 90 million yuan [3] - Wankai New Materials with 46 million yuan [3] - Conversely, significant outflows were noted in: - Shangwei New Materials with a net outflow of 1.92 billion yuan [3] - Guofeng New Materials with a net outflow of 877 million yuan [3] - Wankai New Materials with a net outflow of 543 million yuan [3]