The United States on Thursday announced fresh sanctions targeting Chinese and Russian entities for their role in designing, building and shipping attack drones that have resulted in mass casualties in Ukraine.

The sanctions target two Chinese entities, Xiamen Limbach Aircraft Engine Co., Ltd., and Redlepus Vector Industry Shenzhen Co Ltd (Redlepus), Russian entity TSK Vektor and TSK Vektor’s General Director Artem Mikhailovich Yamshchikov.

A senior administration official told reporters Thursday that the entities were involved in developing the Russian Garpiya series long-range attack drones, producing them in China and shipping them directly to Russia.

“The Garpiya, designed and produced in the People’s Republic of China (PRC) in collaboration with Russian defense firms, has been used to destroy critical infrastructure and has resulted in mass casualties,” the U.S. State Department said in a statement.

“Today’s action is part of our continued effort to disrupt attempts by PRC-based and Russia-based entities and individuals to support Russia’s acquisition of advanced weapons technology and components. We will continue to impose costs on those who provide support to Russia’s military-industrial base.”

The senior administration official said the U.S. has warned Beijing in the past about the network, contradicting Chinese statements that they are not aware of such networks.

Two Chinese firms are directly “involved in producing and shipping things that are unmistakably part of Russia’s war against Ukraine and are going unmistakably to an actor that the West has already identified and sanctioned as being part of the Russian military industrial base,” said the official.

Since 2022, the U.S. has sanctioned close to 100 entities based in China and Hong Kong. The majority of them are part of the supply chain of dual-use items – components or goods that can be converted by Russia into military items that are then being deployed against Ukraine.

However, Thursday’s sanctions were the first to hit Chinese entities “directly developing and producing complete weapons systems in partnership with Russian firms.”

Also Thursday, the U.K. announced its largest package of sanctions against Russia’s “shadow fleet of oil tankers” – ships that supposedly knowingly operate in defiance of Western sanctions.

London said 18 more shadow fleet ships will be barred from U.K. ports, bringing the total number of oil tankers sanctioned to 43.

Sanctions working

In response to VOA’s question, the official said that Western sanctions are working.

“This is having a direct impact on their economy. It’s having a direct impact on their ability to get war material. It’s having a direct impact on the quality of goods that they are achieving,” the official said.

A second senior administration official said Moscow is feeling “unprecedented external pressure” on its trade and investment projects with China. Growing trade ties between the two countries, though, indicate “they are continuing to innovate and circumvent which is why we are also moving out on sanctions and other tools.”

China says it is not providing weapons for Russia. Beijing maintains it handles its export of dual-use items in accordance with laws and applies strict controls on drone exports.

The sanctioned companies’ transactions are “incompatible” with Beijing’s statements, the second official said. “If China is serious about that commitment, we are asking them to take action to shut down this network.”

Beijing has said in the past it “firmly opposes unilateral sanctions and long-arm jurisdiction that have no basis in international law or authorization of the U.N. Security Council.”

Every month, Beijing exports to Russia more than $300 million of those so-called dual-use items that have both commercial and military applications, according to an analysis of Chinese customs data by the Carnegie Endowment think tank.

Ties have grown between Moscow and Beijing. On Wednesday, Chinese Premier Li Qiang and Russian Prime Minister Mikhail Mishustin announced plans for expanded cooperation during the Shanghai Cooperation Organization, or SCO, summit in Islamabad, Pakistan. The SCO was founded by Russia and China in 2001 to counter Western alliances.

VOA’s Paris Huang and Henry Ridgwell contributed to this story.