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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. Commercial Cell Booster, Homemade Cell Phone Signal Booster , At&T Cellular Extender , Rv Cell Phone Booster Antenna ,At&T Signal Booster 5g . Lintratek have R&D Studio, Warehouse, Storehouse, Showroom, Headquarters Office.... We can supply you product certificate and testing report if you need. The product will supply to all over the world, such as Europe, America, Australia,Rio de Janeiro, Czech,Milan, Doha.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.