piece of industrial machinery in a large indoor space

piece of industrial machinery in a large indoor space. The machinery is a gray metal frame with a large, rectangular, metallic chamber in the middle. The top of the chamber is open, revealing a small, rectangular, metallic window inside. There is a small, rectangular control panel with a digital display on the front of the machinery. The chamber is surrounded by a metal frame with various levers, knobs, and a hose coming out of the back. The machinery is sitting on a gray metal base with four round, gray feet. There are two yellow cabinets below the chamber. One has a green control panel with a digital display on the front. The other has a green light switch and a digital display on the front. There is a red button on the right side of the machinery, as well as a green button directly below it. The background is blurry, but it appears to be a large indoor space with a concrete floor. A person is visible in the background, wearing a mask and standing behind a metal railing. There is a metal railing in the foreground, and a blue tarp on the right side. The location of the image is at the Chongqing International Expo Center in Chongqing, China. The coordinates 29.72, 106.537 correspond to the address of the Chongqing International Expo Center.