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Shenzhen SUMRING Technology Co. Ltd is a Hi-tech enterprise specialized in the research & development of security &fire alarm and bluetooth module area, including smoke detector, gas leakage detector, PIR detector, Carbon Monoxide detector, fire alarm bell/strobe siren, manual call point, magnetic contact, bluetooth module, BLE module etc. SUMRING obtained ISO9001 quality system certificate and every year invested 20% of earned into Research & development. Our conventional detectors and fire alarm accessory can be connected with other brand ... [Details]
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