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manufacturer fire safety R&D fire safety engineering certified fire detector intelligent fire预警 platform smart fire platform fire safety deployment fire detection technology fire alarm system commercial fire safety source factory fire equipment fire protection solution industrial fire protection OEM fire equipment IoT fire monitoring fire safety innovation g Self-check smoke heat alarm caregiving technology China elderly care manufacturer carbon monoxide detector automatic water shut off valve stove shut off device anti-dry cooking device ge wholesale smoke detector test tool safety compliance heat detector tester smoke probe telescopic test tool interconnected smoke alarm EN14604 smoke detector bedside emergency button panic button for elderly senior independent living home safety for aging parents aging in place source factory fire equipment fire safety exporter wireless fire detection smart sensing technology R&D deployment smart fir EN54 certified fire safety case study LPCB 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