The HY Series from Huayan Robotics is a line of seven-axis humanoid robotic arms with a spatial cross-axis configuration providing a larger workspace, reduced singularity risk, and higher structural rigidity. Models include the HY 3, HY 7, and HY 15, with payloads from 3 kg to 15 kg. They feature full-joint force control with accuracy up to 0.02 Nm, a large hollow internal routing diameter of 15 mm, native ROS2 support, and edge AI decision-making for real-time anomaly detection and trajectory adjustment.