Established in 1984, NAKAGAWA Electronics Limited (NKG) is a privately-owned crystal components company based in Hong Kong focused on quartz crystals. In 2006 the manufacturing plant moved to Suzhou City, Jiangsu, and the decision was made to collaborate with other manufacturers in the quartz sector. NKG has grown to become one of the most recognized and experienced manufacturers of frequency management products ranging from simple tuning fork crystals to high stability oven-controlled crystal oscillators.