We are a Hong Kong based company with our own factory in Don Guan, Mainland China and we have 160,000sq ft floor space with a staff compliment of more than 1,200 employees. With 30 years experience, China Tone constantly improves and enhances the quality to persist our motto, we are specialized in manufacturing power supply devices. With a wide variety of product expertise, we manufacture AC-AC, AC-DC Adaptors, transformers, inductors, coils and other magnetic components from conventional through-hole to surface mount types. OEM designs are welcomed as well. Our team of R&D specializes in magnetic components design to customer specification, the design capabilities range from simple signal/ power inductors to complex isolation transformers. Our engineers work closely with the customers from the stage of product design to final stage of mass production. We are well equipped with sets of semi and fully automatic machines and computers, materials and components are sourced world widely as well. KINGS steadily increase efficiency, quality and the productivity.