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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. China 2g 3G 4G Repeater and Tri Band Signal Booster, Dual Band Repeater 4g , At&T Cell Phone Extender , 4g Cellular Signal Booster ,Mobile Network Amplifier . 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,Swedish, Ukraine,Pretoria, America.China factory Lintratek focuses on selling signal amplifiers to Africa, Asia, Europe, North America and South America market.