I have a low end weller station dating from the 1984 or so. You know the pale blue standard ones you see everywhere in Canada, or at least used to . On the back it is marked Cooper tools Canada and I always assumed Cooper tools was building them under license for the Canadian market but it turns out Cooper tools is only the immediate parent company. The holding company is APEX tool group:
From wikipedia -"Apex Tool Group is an American supplier of hand tools and power tools. It was formed as a joint venture of Cooper Industries and Danaher by the merger of Cooper Tools and Danaher's Tools and Components segment. In October 2012 Danaher and Cooper sold Apex to Bain Capital for about $1.6 billion.[1] Apex is headquartered in Sparks, Maryland, and has over 20 factories globally including the United States, Canada, Mexico, Germany, China, and South America. "
So Vesubio might be an official brand for the local market, ie it could be just as official as weller. Cooper bought the weller brand name in 1970's.