Research and development and sales of mechanical equipment; operation and management of amusement facilities. Manufacturing of non-road recreational vehicles and zero parts; sales of non-road recreational vehicles and zero parts; sales of ordinary outdoor amusement park equipment; internet sales (excluding products requiring sales permits); manufacturing of entertainment and sports vessels; sales of entertainment and sports vessels; manufacturing of narrow-gauge locomotives and vehicles; sales of toys, animation, and amusement products; toy manufacturing; toy sales; manufacturing of amusement products and indoor amusement equipment; sales of amusement products and indoor amusement equipment; manufacturing of sporting goods and equipment; retail of sporting goods and equipment; experiential expansion activities and planning; manufacturing of virtual reality equipment; sales of digital cultural creative technology equipment. Manufacturing and processing of mechanical equipment.