By Nicoco Chan, Go Nakamura and Xihao Jiang GAOMI, China (Reuters) -Black smoke hung over a chemical plant in eastern China on Wednesday, a day after a massive blast killed at least five people, flattened buildings and fuelled safety fears among residents living close to the factory.

Shattered glass from windows blown apart by an explosion at a chemical plant in China's eastern Shandong province littered the roadside for more than one kilometre on Wednesday, a day after a blast that killed at least five people.

A huge explosion rocked a chemical plant in China's eastern Shandong province on Tuesday at about noon, killing at least five people and injuring 19 others, according to Chinese state media. Six others are said to be missing.

Shares of companies that make software for designing chips fell late Wednesday after reports that the Trump administration is restricting what can be exported to China. The Commerce Department’s Burea

In his first term as president, Donald Trump banned China’s Huawei from using American EDA tools. Huawei is seen as an emerging competitor to Nvidia with its “Ascend” AI chips. Nvidia chief executive Jensen Huang recently warned that successive attempts by American administrations to hamstring China’s AI ecosystem with export controls had failed.

The U.S. has ordered companies that offer software used to design semiconductors to stop selling to China without first getting an export license, two people familiar with the situation said. Electronic design automation software makers,

Nvidia beat quarterly sales expectations as customers stockpiled its AI chips before fresh U.S. curbs on China exports took effect, but the same restrictions will slice off $8 billion in sales from the company's current quarter,

Nvidia missed out on $2.5 billion in additional revenue during the first quarter of this year, after the Trump administration placed fresh restrictions on exports of its H20 artificial intelligence chips to China last month.

While many analysts still count Nvidia as a top tech pick, they're also cautious on overhangs related to China restrictions and tariffs.

The Czech Republic on Wednesday accused China of being responsible for a "malicious cyber campaign" targeting a network used for unclassified communication at its Foreign Affairs ministry, but China rejected the accusations.

The Czech government says it has identified China as being “responsible” for cyberattacks against a communication network of the Czech Foreign Ministry

The Czech Republic said on Wednesday China was responsible for a "malicious cyber campaign" targeting a network used for unclassified communication at the Foreign Affairs ministry, and summoned the Chinese ambassador to condemn the incident.