EF Signal is a technology enterprise specializing in the R&D,production and sales of high-performance RF and microwave amplifier chips.Headquartered in Hong Kong with manufacturing facilities in mainland China,we serve customers worldwide with a comprehensive portfolio of microwave and millimeter-wave semiconductor products.

With years of experience in RF components, mature development processes, strict quality control systems and localized supply models, we develop high-quality, cost-effective RF amplifier chips. Our products are widely used in communication equipment, industrial RF devices and intelligent terminals.

Adhering to stable supply, guaranteed quality and professional service, we avoid premium marketing markup, and provide reliable, safe and long-term chip supply solutions for electronics manufacturers,industrial & trading enterprises and equipment producers.