3 years long standby track sos advantages and disadvantages?
3 years long standby track sos advantages 1, long standby time: absolutely no mistake, Xiaobian did not write wrong, that is, standby time of up to 3 years. 2, no installation: convenient installation, no need to break the line, you can install yourself. 3, concealment: 3 years long standby track sos has a strong magnetic sharps, can be adsorbed on the iron plate anywhere, has a...
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