Dual frequency 5W Signal Boosters 2G/3G/4G, Cover 3000-4000 square meters. The effective is very great

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Dual frequency 5W Signal Boosters 2G/3G/4G, Cover 3000-4000 square meters. The effective is very great

watch the video on youtube

https://www.youtube.com/watch?v=YMGhFEM3qo4

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