Starting small, Grunwald specialists continued to analyze the requirements of European carriers in order to build on their success. It was necessary to take a new look at the model of a lightweight container semitrailer, improve the frame design, review individual components, and take into account the specific wishes of customers.
As a result of a lot of work by engineers, the first batch of new lightweight low-frame container semitrailers for transporting 40-Ft High Cube containers was released in November 2020 The new model's own weight is no more than 3,600 kg. At the same time, the frame structure, made of high- strength steel, is optimized in such a way as to combine a high payload with maximum strength. For the first time, the Jost axial unit with disc brakes was used – one of the lightest and most
technologically advanced solutions. The rear axle is equipped with a lifting/lowering mechanism.