9
Sunlight, cross wind and head wind simulators for automotive industry; wind tunnels for testing aerodynamics and parts therefore, namely, wind tunnel fans; wind tunnels for aviation and aerospace industry and research institutes
11
Axial and radial flow fans for industrial applications; roof fans, axial-flow fans, radial-flow fans, air heaters, roof-mounted heat pumps, smoke extraction fans for mechanical building services; jet fans for tunnel engineering; air locks for personnel and material entering an environmentally controlled space
37
Installation, maintenance and repair of-- sunlight, cross wind and head wind simulators for automotive industry; air-locks for personnel and material; axial and radial flow fans for industrial applications; roof fans, axial-flow fans, radial-flow fans, air heaters, roof-mounted heat pumps, smoke extraction fans for mechanical building services; jet fans for tunnel engineering; wind tunnels, wind tunnel fans; wind tunnel fans for aviation and aerospace industry and research institutes