Our linear-drive project is in production, not on a slide: ~70k sets/year precision-ground ball screws, ~360k m/year high-precision rails, 300+ customers. The grinding base — 精密磨削 — gates the bottleneck. Planetary roller screws (the humanoid-relevant part) are earlier: sampling and initial mass production. Products serve mid-high-end industrial equipment; no named humanoid program. The distinction matters — grinding is where counting carefully is the whole game.