According to August component survey, hair‑pin motors, IP65 waterproof controllers and thermal‑managed lithium‑ion batteries are spreading from high‑end to mainstream leisure two‑wheelers and tricycles. Rain‑prone southern regions and cold northern areas demand battery thermal control and full‑vehicle water resistance. Many factories develop narrow‑body tricycles tailored for narrow streets in Europe and Japan. Domestic‑sales and export‑oriented product platforms are separated for differentiated R&D.