非金属材料板块1月21日涨1.49%，天马新材领涨，主力资金净流入4388.56万元

Group 1 - The non-metal materials sector increased by 1.49% on January 21, with Tianma New Materials leading the gains [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] - Key stocks in the non-metal materials sector showed varied performance, with Tianma New Materials closing at 35.30, up 5.75%, and Dongfang Huizhen declining by 0.41% to 12.04 [1] Group 2 - The non-metal materials sector saw a net inflow of 43.89 million yuan from main funds, while retail investors experienced a net outflow of 36.99 million yuan [2] - Major stocks like Suotong Development and Lianrui New Materials had significant net inflows from main funds, with 29.09 million yuan and 28.73 million yuan respectively [3] - Retail investors showed a negative trend in stocks like Ningxin New Materials and Qilu Huaxin, with net outflows of 2.09 million yuan and 1.09 million yuan respectively [3]