Established in 1986, we are a manufacturer specializing in automatic voltage regulators, power inverters, DC regulated power supplies, voltage converters, rotating antenna, TV antenna boosters and wireless digital doorbells.To ensure that our products meet international quality standards, we have invested in a range of testing equipment from traditional signal generators through to Network Analyzers and Spectrum Analyzers. Our management system ensures that our strong R&D team works closely with design, manufacturing and testing to create a smooth process from design through to the finished product.Please visit our hompage http://www.giantel.com.cn for more details.