South Korea and the US plan to discuss cooperation on "trusted" 5G networks, global supply chains and other key issues in their upcoming economic talks, a senior US diplomat said Thursday, amid an intensifying America-China rivalry.

Jose W. Fernandez, the undersecretary of state for economic growth, energy and the environment, said he expects to talk about a number of "positive" economic issues during the sixth Senior Economic Dialogue (SED) slated for Friday, noting cooperation in the 5G network will be one of the key issues.

His remarks came as US President Joe Biden rallied allies and partners against authoritarianism in last week's democracy summit, with his top diplomat, Antony Blinken, rebuking China for "aggressive" actions during a Southeast Asia swing this week.

"There is a desire for trusted networks, and there's a desire to expand 5G connectivity," Fernandez told Yonhap News Agency on the sidelines of a bilateral economic forum held in Seoul.

"We're also talking to several countries who are interested in establishing 5G networks. And so that'll be part of our discussions. I think there are opportunities for Korean companies," he added.

The fifth-generation telecommunications technology is a key battleground of Sino-US competition, as Washington remains concerned about potential security risks from what it calls untrusted vendors, including economic espionage.

Seoul and Washington have been exploring ways to expand cooperation in the network area after Presidents Moon Jae-in and Biden agreed to work together to develop open, transparent 5G and 6G network architectures during their Washington summit in May.

Fernandez said the upcoming SED will feature extensive discussions on supply chain resiliency, the digital economy, 5G network security as well as collaboration in infrastructure, energy, health care and science and technology fields.

When asked about whether he will discuss ways to counter economic coercion in the Indo-Pacific region, Fernandez said "it's something we're concerned about" but noted it is "not one of the angles" for the upcoming economic talks.

During his visit, the US diplomat plans to meet Yoon Tae-sik, deputy finance minister for international affairs, and Park Jin-kyu, vice industry and trade minister, to discuss cooperation on infrastructure and supply chains of major industries, according to Seoul officials.

He is also scheduled to meet industry figures from major semiconductor, battery, bio and construction companies to discuss ways to expand business partnership between the two nations.

Among them are chipmaker Samsung Electronics Co. and battery maker LG Energy Solution Ltd, which have factories in the US, according to informed sources. (Yonhap)