61. What is the difference between ordinary trucks and special large-piece trucks?

61. What is the difference between ordinary trucks and special large-piece trucks?

1. Ordinary flatbed trucks: suitable for regular-size, standard-weight small energy items; general flatbed and side-board trucks suffice.
2. Special oversized trailers: lowbed, multi-axle hydraulic modular trailers, well-deck (concave) trailers and frame trailers; used for over-wide, over-height, over-length and overweight transformers and wind-turbine blades; adjustable platform height and axles distribute axle load to avoid bridge weight limits.