The USA is stepping up its isolation of the Chinese chip industry. With a further tightening of their embargo on tech exports to China, officials have blacklisted 140 more companies, according to the news agency Reuters. Restrictions have been placed on the supply of advanced memory chips for artificial intelligence (AI) as well as other machinery and software for semiconductor production. In addition, equipment manufactured in other countries such as Singapore or Malaysia will be banned from being shipped to the People’s Republic.