Hoʻokumu i ka 2004, Ningbo Yishen uila noʻeleu ma luna o ka ulu '& manufacturing electromagnetic a kuapo kanaka uhi:
1. kaʻa kuapo kanaka 2. EV (uila kaa) kauoha aku la i-wahie kuapo kanaka 3. Power kuapo kanaka 4. Mana Lima kuapo kanaka