Fujitsu is basically the Japanese IBM.

I am in tech (okay now I am really wondering what % of people on here are NOT in tech). I have spent years in Japan for work, and ironically right now as I type this, I am sitting in a seat on JL2 from Tokyo to SFO. I worked with all of the large Japanese companies over the years and I can say Fujitsu has always been the most impressive, and to you comment, most like golden age IBM (I worked there for a brief time also). They, like IBM are most likely to have brilliant tech, and then shoot themself in the head for non-tech reasons.

Fujitsu was a telco equipment spinoff from Fuji Electric, so Fujitsu do/did make a lot of things that would be in a phone exchange building over its history, from air conditioners to terminals to actual mainframes. Just not as everything as Mitsubishi, which was a do-all procurement company for the new government when the Tokugawa stepped down.

About 25 years back here in Australia they were advertising Fujitsu air-conditioners, they had the promise of some like "They will get the air down to 17c in all conditions."

About a month later there was a summer heat wave and I went to a friends house who had just bought one. It was wild walking in from a 45c day into, as advertised, a 17c house. Had to give it to them, they lived up to the claim.

That they come from the telecom/server space, it makes sense they had a good eye for aircon engineering.

In Spain an aircon ad in TV joked by telling the viewer that "silence" in Japanese it's "Fujitsu".

Probably Panasonic. They're like the Apple of the B2B world. Except they also make everything