We can design and offer the products( Carriage, Trailer, Cargo Van, Dump Truck, Explosion Proof Van, Insulated Van, Refrigerated Van and Storehouse Bar Truck .etc.) according to your request. The parameter of the Semitrailer( ZZT9311XXY) that picture shows. Model: ZZT9311XXY Overall dimension: 12400*2400*39000mm Dimension of the cargo body: 12300*2300*2400mm Wheel base: 7600+1360 Number of Axles: 2 Gross W: 31000kg Rated payload: 24000kg If you want more other detailed information, please be free to contact me.