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Segment Information | 12 Months Ended
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Oct. 31, 2023
Segment Information |
Segment Information | Note 14. Segment Information We are engaged in the development, design, production, construction, and servicing of high temperature fuel cells for clean electric power generation. Critical to the success of our business is, among other things, our research and development efforts, both through customer-sponsored projects and Company-sponsored projects. The research and development activities are viewed as another product line that contributes to the development, design, production and sale of fuel cell products, however, it is not considered a separate operating segment. The chief operating decision maker does not review and assess financial information at a discrete enough level to be able to assess performance of research and development activities as if they operated as a standalone business segment, therefore, the Company has identified one business segment: fuel cell power plant production and research. Revenues, by geographic location (based on the customer’s ordering location) for the years ended October 31, 2023, 2022 and 2021 were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021
United States | ​ | $ | 63,289 | ​ | $ | 60,290 | ​ | $ | 58,393
South Korea |  | ​ | 58,432 |  | ​ | 68,341 |  | ​ | 8,161
Europe |  | ​ | 1,673 |  | ​ | 1,853 |  | ​ | 3,031
Total | ​ | $ | 123,394 | ​ | $ | 130,484 | ​ | $ | 69,585
​ Long-lived assets located outside of the United States as of October 31, 2023 and 2022 are not significant individually or in the aggregate.

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