There's plenty of info about that show, with real pictures.[1] BYD has a full range of electric trucks, but what they're pushing seems to be the T3 and T4 trucks. The new T4 is a straight truck, available as a box truck, flatbed, or open top truck. Or they'll sell the chassis for custom jobs. Claimed range is "up to 250km". It's intended for city use with once daily charging. The T3, which has been out for a few years, is an ordinary electric van, comparable to a Ford Transit or a Mercedes Sprinter. These are high-volume commercial products. Light and medium electric trucks are taking over fleet operations.
BYD has a new line of heavy electric trucks, launched in April.[2] This isn't BYD's first try at heavy electric trucks. They delivered some (at least hundreds, but not tens of thousands) in 2022. The 2025 model is at least their third try. They don't claim to have cracked long-haul trucking. "BYD Tractor Q3: Focusing on Short – Haul Transportation and Breaking Through Medium – and Long – Haul Transportation" is their marketing pitch. There are multiple battery options, and for charging, the Q3 can be plugged into up to four chargers at once. Long-haul operation is possible, but it's not yet the target market.
So the BYD heavy trucks aren't mainstream in China yet, but they're a lot closer than Tesla's Semi (yet another re-announcement: [3]) or the Nikola (only works going downhill and required a Trump pardon for the CEO).
Volvo has a range of electric trucks, mostly sold in Europe.
[1] https://www.chinatrucks.org/news/2025/1110/article_11304.htm...
[2] https://www.ctinsa.com/ccnes/5550
[3] https://elonbuzz.com/the-tesla-semi-2026-update-is-here/