OUR FACTORY SPECILIZE IN PRODUCE A FULL RANGE OF CELL (MOBILE) PHONE SIGNAL DEVICES, INCULDING MOBILE PHONE JAMMERS, AMLIFIER (REPEATER) AND ANIT-VIDEOTAPING EQUIPMENT. OUR PRODUCTS COVERED ALL OF THE WORKING BANDS IN THE WORLD, SUCH AS 3G, GSM, CDMA, DCS, PCS AND SO ON. ALL OF OUR PRODUCTS ARE PASSED CE & ROHS APPROVAL.