浙海德曼今日20cm涨停，3家机构专用席位净买入2.22亿元

Group 1 - Zhejiang Haideman experienced a 20% limit-up increase today, indicating strong market interest [1] - The trading volume reached 680 million yuan, reflecting significant activity in the stock [1] - The turnover rate was 4.83%, suggesting a moderate level of trading relative to the total shares outstanding [1] Group 2 - Three institutional special seats net bought 222 million yuan, indicating confidence from institutional investors [1]