东土科技涨2.11%，成交额1.22亿元，主力资金净流入413.18万元

Group 1 - The core viewpoint of the news is that Dongtu Technology's stock has shown significant fluctuations, with a year-to-date increase of 72.65% and recent trading activity indicating mixed performance [1] - As of December 18, Dongtu Technology's stock price reached 19.82 yuan per share, with a total market capitalization of 12.187 billion yuan [1] - The company has seen a net inflow of main funds amounting to 4.1318 million yuan, with large orders contributing significantly to the trading volume [1] Group 2 - Dongtu Technology, established on March 27, 2000, specializes in the research, production, and sales of hardware devices in the industrial control network sector [2] - The company's main business revenue composition includes 68.97% from industrial network communication, 20.05% from smart controllers and solutions, and 10.98% from industrial operating systems and related software services [2] - As of September 30, the number of shareholders decreased by 9.62% to 58,700, while the average circulating shares per person increased by 10.88% to 9,177 shares [2] Group 3 - Dongtu Technology has distributed a total of 107 million yuan in dividends since its A-share listing, with no dividends paid in the last three years [3]