On April 8th, the main A-share index opened high and rose. As of the morning close, the Shanghai Composite Index rose 1.92%, up more than 70 points; The Shenzhen Component Index rose 3.87%, the ChiNext Index rose 4.81%, and the Sci Tech Innovation Composite Index rose 4.53%.
Nearly 5000 stocks in the entire market rose, 91 stocks hit the limit up, and only 453 stocks fell. On the market, the precious metal sector rebounded strongly, with big technology rising across the board and CPO leading the gains. Cloud computing, AI applications, semiconductor equipment, media, components, aviation and airport, software development and other sectors led the gains.
The stock markets in Japan and South Korea saw an expansion in gains. As of press time, the Nikkei 225 index has risen by 2900 points, with an increase of 5.44%; The KOSPI index in South Korea has risen by over 7%, SK Hynix's stock price has risen by over 14%, and Samsung Electronics has risen by over 8%; The Pakistan KSE-30 index surged 8.5%, triggering a trading halt.
The collective price increase of white carbon black is 500 yuan/ton, and the sharp rise of sulfuric acid may become the biggest driving force
From mid March to early April, white carbon black enterprises in major production areas such as Fujian, Shandong, and Jiangxi sent intensive letters, clarifying the self adjustment of the full range of products by 500 yuan/ton. In addition, some enterprises had already undergone a round of price adjustments in early March, with a cumulative increase of 800 yuan/ton.
Enterprise letters all point out that the sharp rise in raw material and energy prices has led to cost breakthroughs beyond the profit red line. The current mainstream quotation is 6300-7000 yuan/ton, an increase of 12% -18% from the end of 2025, and downstream enterprises have begun to passively accept price increases.
Since March 2026, domestic sulfuric acid has experienced an epic rise, with an average price of about 1060 yuan/ton at the beginning of March, rising to 1800 yuan/ton on April 7th, a monthly increase of nearly 50%, and a rise of over 150% from the low point in 2025, reaching a new high in nearly 20 years. The root cause is the sulfur supply crisis caused by the Middle East geopolitical conflict, equipment maintenance, and rigid demand release. As the core raw material of white carbon black, sulfuric acid consumes about 0.45 tons/ton, accounting for 18% -22% of the total cost. The price increase of sulfuric acid in this round has led to an increase of about 300 yuan in the cost of white carbon black per ton. Combined with other costs, the 500 yuan/ton price increase has not fully covered the cost gap, and the enterprise is in a passive state of making up for losses.