In statements to the Hong Kong and Shenzhen stock exchanges, ZTE said trading in its shares had been halted at its request over the "United States Commerce Department's proposal to implement export restrictions on the company" but gave no further details.
ZTE is China's second-biggest telecom equipment maker.
News agency Reuters reported that the restrictions mean ZTE's suppliers must apply for an export licence before shipping any US-made equipment or parts to the Chinese company.
Asked about the issue, China's foreign ministry on Monday criticised US government actions against the country's companies.
"China is always opposed to US sanctions on Chinese enterprises citing domestic laws," foreign ministry spokesman Hong Lei told reporters in Beijing.
"We hope that the US side can stop such erroneous practices so as to avoid further damage to Sino-US economic cooperation and bilateral relations."
Washington in January eased several restrictions on doing business with Iran, following an international agreement over the country's nuclear programme.
China's Global Times newspaper on Monday quoted a ZTE statement as saying: "ZTE closely complies with international industry rules as well as the laws of foreign countries."
Founded in 1985, ZTE offers both telecom equipment and services with customers in more than 160 countries, according to its website.
In January, Norway's public pension fund said it had divested from ZTE because of corruption fears, according to the country's central bank, which manages the fund.
An ethics council that advises the bank said ZTE was facing corruption allegations in 18 countries and the group was or had been under investigation in 10 of them.
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