SFI立昌公司成立于公元2000年1月，主要系生产电子保护组件－瞬时电压抑制器（又称突波吸收器或压敏电 阻）、EMI（电磁干扰）滤波器及EMI/ESD（电磁干扰/静电放电）双功能滤波器之专业制造厂，并以自创品牌『SFI』持续占领市场并营销全世界。为 服务与支持客户，SFI立昌公司透过坚强的营销团队、策略联盟的代理商伙伴及因特网的无远弗届，随时提供在地服务，满足客户的需求。
 
SFI Electronics Technology Inc. is established in Jan. 2000. We are the professional manufacturer of protective components in circuit, “Transient Voltage Suppressor” (also called Varistors), EMI Filters (Noise interference) and EMI/ESD Filter (Noise interference and electrostatic discharge) with dual functions. SFI continue to expand the market and sale globally with own brand “SFI”. SFI has the strong marketing team and alliance agents in order to serve and support customers. Also, we provide service anytime through internets to satisfy various demands of customers.