Yen Sun Technology Yen Sun Technology (元山科技工業股份有限公司) is a company that develops, manufactures, and sells home appliances and electronic cooling products. | ![]() Rinnai Rinnai (formerly known as Rinnai & Co., リンナイ株式会社) is a company that develops, manufactures, and sells heating products. | ||||
Founding Date | Founding Date 1987 | Founding Date 1950 | Founding Date 1967 | Founding Date 1988 | Founding Date 1991 |
Type | Type Public | Type Public | Type Subsidiary | Type Private | Type Private |
Tags | |||||
Locations | Locations HQ | Locations Nagoya, JP HQ | Locations BR HQ | Locations Moraine, US HQ | |
Employees | Employees N/A | Employees 10,837 | Employees 7581% increase | Employees 1292% increase | Employees 53 |
Financial | |||||
Revenue (est.) | Revenue (est.) NT$4.3b (FY, 2025) | Revenue (est.) ¥470.4b (FY, 2026) | Revenue (est.) €15.6b (Y, 2021) | Revenue (est.) N/A | Revenue (est.) N/A |
Cost of goods | Cost of goods NT$3.4b (FY, 2025) | Cost of goods ¥296b (FY, 2026) | Cost of goods N/A | Cost of goods N/A | Cost of goods N/A |
Gross profit | Gross profit NT$943m (FY, 2025) | Gross profit ¥174.4b (FY, 2026) | Gross profit N/A | Gross profit N/A | Gross profit N/A |
Net income | Net income NT$219.9m (FY, 2025) | Net income ¥43.3b (FY, 2026) | Net income N/A | Net income N/A | Net income N/A |

Rinnai (formerly known as Rinnai & Co., リンナイ株式会社) is a company that develops, manufactures, and sells heating products.
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