# throttleable engine

Chinese Commercial Launcher Tests Deep‑Throttle, Reusable LOX‑Kerosene Engine Built with 3D‑Printed Stainless Steel

Zhongke Yuhang has completed acceptance tests of its Liqing‑1 30‑ton LOX‑kerosene engine, demonstrating deep throttle (100%–50%) and 1% thrust precision, using a needle‑and‑pin injector and stainless‑steel 3D‑printed components. The company plans to use three Liqing‑1 engines on its LiHong‑2 reusable vehicle and is preparing larger Liqing‑2 tests, marking a material advance for China’s commercial reusable‑rocket ambitions.