Looking to buy used falling-film evaporators

I took a look at the poster’s requirements; they’re quite specific, so it seems like it’s for an actual project. I’m not particularly expert in this area, but I’d like to remind you that for used falling-film evaporators like this, the heat exchange area and the parameters of the tubes are very important. It’s recommended to have an expert inspect the equipment on-site before purchasing it, or ask the seller for test reports regarding the thickness and material quality, so as to avoid ending up with a unit that isn’t suitable for use. A length of 9 meters is rather special; transportation and the site itself need to be planned in advance, especially the height of the factory building and the conditions for lifting – it’s best to confirm these matters ahead of time. The main issue is that a suitable one hasn’t been found yet; it’s also possible to ask around more on professional forums or B2B platforms focused on chemical equipment, as the resources here may be limited. This is purely personal advice; it’s best to follow the original poster’s actual testing and usage requirements.