![]() Shanghai TieDa Telecom Technology Shanghai TieDa Telecom Technology (上海铁大电信科技股份有限公司) is a company that manufactures and sells rail and subway signal system equipment. | ![]() Calian Advanced Technologies Calian Advanced Technologies (formerly known as Calian SED and SED Systems) is a subsidiary of Calian Group that provides communication systems. | ![]() Link-Asia International MedTech Link-Asia International MedTech (环亚国际医疗科技集团有限公司) is a company that manufactures electronic products and provides related supply chain services. | ![]() Triorail Bahnfunk Triorail Bahnfunk is a company that manufactures and supplies global systems for mobile communications – railway (GSM-R) products. | ||
Founding Date | Founding Date 1992 | Founding Date 1964 | Founding Date 2010 | Founding Date 2002 | Founding Date 1983 |
Type | Type Private | Type Subsidiary | Type Public | Type Private | Type Private |
Tags | |||||
Locations | Locations HQ | Locations Saskatoon, CA HQ | Locations Hong Kong, HK HQ George Town, KY Guangzhou, CN | Locations Munich, DE HQ | Locations Lake Oswego, US HQ |
Employees | Employees N/A | Employees 3351% decrease | Employees 835 | Employees 35 | Employees 572% decrease |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) $207.9m (FY, 2024) | Revenue (est.) $479.5m (FY, 2024) | Revenue (est.) N/A | Revenue (est.) N/A |
Cost of goods | Cost of goods N/A | Cost of goods $125.5m (FY, 2024) | Cost of goods $336m (FY, 2024) | Cost of goods N/A | Cost of goods N/A |
Gross profit | Gross profit N/A | Gross profit $82.5m (FY, 2024) | Gross profit $152.3m (FY, 2024) | Gross profit N/A | Gross profit N/A |

Calian Advanced Technologies (formerly known as Calian SED and SED Systems) is a subsidiary of Calian Group that provides communication systems.
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Link-Asia International MedTech (环亚国际医疗科技集团有限公司) is a company that manufactures electronic products and provides related supply chain services.
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Triorail Bahnfunk is a company that manufactures and supplies global systems for mobile communications – railway (GSM-R) products.
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Sonetics provides team communication systems for challenging work environments.
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