专业工程板块9月12日涨0.38%，罗曼股份领涨，主力资金净流入5962.03万元

Market Performance - The professional engineering sector increased by 0.38% on September 12, with Roman Co. leading the gains [1] - The Shanghai Composite Index closed at 3883.69, up 0.22%, while the Shenzhen Component Index closed at 12996.38, up 0.13% [1] Capital Flow - The professional engineering sector saw a net inflow of main funds amounting to 59.62 million yuan, while retail investors experienced a net outflow of 52.09 million yuan [2] - The table indicates that Baoli Technology had a main fund net inflow of 10.21 million yuan, representing 56.54% of its total [2] - China Metallurgical Group had a main fund net inflow of 33.47 million yuan, accounting for 7.27% of its total [2] - Other notable companies include Zhonghua Rock and Soil with a net inflow of 27.22 million yuan (7.50%) and Nenghui Technology with 24.33 million yuan (8.84%) [2]