胜宏科技低开5%，上半年净利润21.43亿元，同比增长366.89%。

Core Insights - Shenghong Technology experienced a 5% decline in stock price, despite reporting a net profit of 2.143 billion yuan for the first half of the year, representing a year-on-year increase of 366.89% [1] Company Summary - Shenghong Technology's net profit for the first half of the year reached 2.143 billion yuan, showing significant growth compared to the previous year [1] - The company's stock opened lower by 5%, indicating market reactions despite strong financial performance [1] Industry Context - The substantial year-on-year profit increase of 366.89% suggests a positive trend within the industry, potentially attracting investor interest [1]