• Pentagon adds Alibaba, Baidu, BYD to list of firms supporting Beijing's military.
• Designation does not impose formal sanctions but bars future Defense Department contracts.
• Move could further strain US-China relations after Trump-Xi trade truce.
• List includes electric vehicle makers, memory chipmakers, and biotech firms.

This move may indicate the US intends to maintain pressure on China despite recent diplomatic efforts. The inclusion of major tech companies suggests a broadening of US scrutiny, which could inflame tensions and impact global supply chains, potentially signaling a new phase in the US-China technology competition.