On July 21, Guoci Materials experienced a remarkable surge, with its share price hitting the daily limit and climbing by an impressive 19.99%. The trading volume soared to 6.1 billion yuan, accompanied by a turnover rate of 13.15%. According to the post-market dragon and tiger list, the dedicated seat of the Shenzhen-Hong Kong Stock Connect purchased shares worth 435 million yuan and sold shares valued at 565 million yuan. Meanwhile, four institutional dedicated seats registered a net sale of 235 million yuan. The day before, Guoci Materials made an announcement stating that, owing to the persistent rise in the prices of raw and auxiliary materials for zirconium oxide powder production, it had decided to raise the selling price of zirconium oxide powder starting from July 27. The price hikes were projected to range from 10% to 40%. As a result of this development, zirconium oxide concept stocks witnessed a collective surge.