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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. Boost Cell Phone Signal In Building, 4g Amplifier Repeater , Phone Signal Booster , 5g Booster ,Cell Phone Reception Booster . 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,Brasilia, Czech republic,Hungary, Honduras.China factory Lintratek focuses on selling signal amplifiers to Africa, Asia, Europe, North America and South America market.