橡胶板块12月1日涨2.19%，彤程新材领涨，主力资金净流入1.3亿元

Group 1 - The rubber sector experienced a rise of 2.19% on December 1, with Tongcheng New Materials leading the gains [1] - The Shanghai Composite Index closed at 3914.01, up 0.65%, while the Shenzhen Component Index closed at 13146.72, up 1.25% [1] - Key stocks in the rubber sector showed significant price increases, with Tongcheng New Materials closing at 42.66, up 7.70% [1] Group 2 - The rubber sector saw a net inflow of 130 million yuan from main funds, while retail investors experienced a net outflow of 166 million yuan [2] - Major stocks like Tongcheng New Materials and Kexin New Energy attracted substantial main fund inflows of 83.05 million yuan and 49.39 million yuan, respectively [3] - Retail investors showed a significant outflow from stocks such as Kexin New Energy, with a net outflow of 86.11 million yuan [3]