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1-band, 2-band, 3-band, 4-band, 5-band cell phone signal booster, for different scale space: home, office, hotel, factory, shopping mall, business building. B20 Mobile Signal Repeater, Lte Signal Extender , At&T Signal Booster 5g , Cell Phone Signal Booster For Home ,850mhz Signal Booster . 11 year telecommunication manufacturer Lintratek,Focus on supply good telecommunication environment to people all the world. The product will supply to all over the world, such as Europe, America, Australia,Poland, Slovenia,Accra, India.Lintratek has been focusing on signal amplifiers for more than 20 years, specializing in the sale of 1-band 2-band 3-band 4-band 5-band.