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Shenzhen Hongwei Crown Information Technology Co., Ltd The hardware supports OEM and ODM custom development, and the software supports customer-owned platform integration and server API interface connectivity. Supports existing national languages: English, Chinese Foreign APP: SeTracker or SeTracker2 Domestic APP: Security Guardian If you need to customize other languages, please contact customer service. This product supports multiple global frequency bands and is divided into three versions: domestic, Eurasian, African, and American versions. When placing an order, please ensure to select the corresponding country and state.