Ligao established in 1986 is a professional manufacturer specializes in Automatic Voltage Regulator , Power Inverter, Dc Regulated Power Supply, Voltage Converter, Rotating Antenna, TV Antenna Booster and Wireless Digital Doorbell with strong R & D, manufacturing and sales teams. As for testing equipment , our company has purchased everything from traditional signal generators to the most advanced high-tech equipment, such as Net-work Analyzers and Spectrum Analyzers, in order for ...more