Atten Technology Co., LTD. is one of China largest and most powerful electronic instrument manufacturers which also be the only one for large-scale manufacturing civil spectrum analyzer. We have obtained ISO 9001:2000 quality management system certificate and the title of Shenzhen high-tech enterprise. Founded in 1996, the company plant area now cover over 10,000 with over 500 employees which is specialized in developing, manufacturing and sales of electronic instruments and communication testing devices. The first product category: RF instrument and Microwave instruments which includes spectrum analyzers, swept spectrum analyzers, oscilloscopes, frequency meter, power meter, function signal generator, RF signal source, multimeter and so on. The second product category: Microwave passive/active devices, attenuators, coaxial load, couplers, power divider etc.