The companies, in line with market principles and international rules, have conducted commercial activities in the United States while following local laws and regulations, Wang told a daily press briefing.
Still, it will be necessary to establish a clear framework for relations between China and the United States, given the current complex situation of ties, he said.
Some American politicians who are biased against and hostile to China are using their power to smear China with fabrications and impede normal ties with China under various pretexts, Wang told Xinhua in an exclusive interview.
Cui made the remarks when he was invited to attend the 2020 Aspen Security Forum and had an online interview with Nicholas Burns, executive director of the Aspen Strategy Group, and Andrea Mitchell, chief foreign affairs correspondent of NBC News, on issues related to China-U.S. relations last week.
Forty years on, while China and the United States are quite different in social system and many other aspects, such differences have not affected the peaceful coexistence and win-win cooperation between the two countries, and they should not affect their bilateral ties in the future, he said.
The legislation on safeguarding national security in Hong Kong has plugged the long-standing legal loopholes in Hong Kong, he said, adding that the legislation will "ensure both the long-term implementation of the policy of 'one country, two systems' on the basis of rule of law and durable security and stability of Hong Kong."
In the meantime, China will firmly defend its sovereignty, security and development interests, because this is a legitimate right inherent in China being an independent sovereign state, Wang stressed.
The United States should honor the principle of sovereign equality enshrined in the UN Charter, learn how to get along with different systems and civilizations and adapt itself to peaceful coexistence, and accept the reality that the world is moving toward multipolarity, said Wang.
"Projects linked to the BRI such as the Sihanoukville Special Economic Zone (SSEZ) and the Phnom Penh-Sihanoukville Expressway are two ideal examples to show how BRI helps Cambodia in strengthening industrial sector and diversifying exports through transport and logistics enhancement," he said.
Spokesman Wang Wenbin made the remarks at a routine press briefing after Joerg Wuttke, president of the European Union Chamber of Commerce in China, on Tuesday expressed confidence of European companies in China's development prospects.
Asked about Washington's criticism of the World Health Organization (WHO) and decision to withdraw from the organization amid the COVID-19 pandemic, Maggiorelli said the U.S. decision to withdraw from the organization is "undoubtedly due to political reasons and not health concerns," Maggiorelli said.