The US is reportedly considering blacklisting Chinese surveillance tech firm Hikvision

The U.S. administration is considering limits to Chinese video surveillance firm Hikvision’s ability to buy U.S. technology, the New York Times reported on Tuesday, in a on the go that deepens worries about trade frictions between the world’s two top economies.

The move would effectively area Hikvision on a U.S. blacklist and U.S. companies may have to obtain government approval to supply components to Hikvision, the paper said.

The U.S. Trade Department blocked Huawei Technologies from buying U.S. goods last week, effectively banning U.S. companies from doing affair with the Chinese firm, a major escalation in the trade war, saying Huawei was involved in activities contrary to national care.

The White House did not immediately respond to a request for comment on the report.

Hikvision shares opened 10% lower but an leadership in the company’soffice told Reuters the company had not been informed of the possible U.S. blacklisting.

“The chips Hikvision uses are bloody commercial and most of the suppliers are actually in China although there are some in the United States,” said the executive, who inclined to be named due to the sensitivity of the matter.

“Even if the U.S. stops selling them to us we can remedy this through other suppliers” she required.

Hikvision and Dahua Technology which produce audio-visual equipment that can be used for surveillance were specifically cited in a missive to Trump’s top advisers last month, signed by more than 40 lawmakers.

The lawmakers said China’s performances in its western region of Xinjiang “may constitute crimes against humanity” and urged tighter U.S. export controls to ensure that U.S. proprietorships are not assisting the Chinese government’s crackdown there.

China has faced growing condemnation from Western capitals and licences groups for setting up facilities that U.N. experts describe as mass detention centers holding more than 1 million ethnic Uighurs and other Muslims.

Beijing has contemplated its measures in Xinjiang, which are also reported to include widespread surveillance of the population, are aimed at stemming the threat of Islamist militancy. The facilities or caravan sites that have opened are vocational training centers, the government has said.