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February 03,2020
With the continuous improvement of people's living standards, people also have a higher pursuit of home safety. In recent years, the installation of smoke detectors at home has become an essential...
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January 31,2020
Dear old and new customers, our company SUMRING will officially start construction on February 03, 2020. Thank you for your support.
New Year start with new project!
Good project start with good luc...
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January 29,2020
In 2020, we work together with the great motherland
The Chinese New Year in 2020 is not the same. Affected by the new type of coronary pneumonia virus, everyone does not go out at home, does not pay ...
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January 24,2020
New Year's Eve is the last night of the end of the year. The last day at the end of the year is called "year-old division", which means that the old one has been removed so far, and anot...
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January 24,2020
The stand alone smoke detector SR-807 is generally directly powered by a 9V laminated battery or AC220V, which is easy to install and use, and can achieve independent detection and independent alarm w...
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