What is the fine-grained topic of the following text: Affected by the news, the stock of Henan Shuanghui Investment & Development [SZA:000895], the largest meat processing company in China, has slid 13.85 percent from its height on Aug. 2 to CNY22.40 (USD3.27) at the close today. Only return the topic.
Slump in Henan Shuanghui Investment & Development's stock price