Humanoid robotics has hit a real inflection as Tesla's Optimus enters verifiable mass production, with Elon Musk's photos from the line easing fears he had shifted focus to space. Tesla targets about 1,000 units a week from September, and Chinese output, over 80% of 2025's roughly 20,000 global units, is badly underestimated. Fenglong is the most undervalued maker; Leaderdrive has about 80% of domestic humanoid harmonic reducers; Sanhua leads Tesla's chain; Hengli makes screws; Kedali is cheap. x.com







