9QS-2800W/9QS-3400W self-propelled forage harvester is compatible with both 2.85 m dual-disc header and 3.4 m foldable header. The harvester has a secondary lifting hopper, eliminating the need for hauling trailer when harvesting small plots, which is flexible and convenient. It is powered by a renowned 400HP engine and a 4WD walking system, enabling it to adapt to complex terrains and ensuring smooth operation. With compact structure and lightweight design, featuring tight turning radius and high flexibility, this machine delivers efficient performance in both large farmland and small plots, significantly boosting productivity while reducing operational complexity. Its grain crushing function is also excellent, thoroughly processing corn and other crops with over 97% crushing efficiency, allowing livestock to better digest and absorb them, providing high-quality feed for livestock farming. The hydraulic driven walking system delivers effortless operation for forage harvesting. 9QS-2800W/9QS-3400W self-propelled forage harvester serves as an indispensable assistant for small and medium-sized livestock farms.