NGK Insulators (日本ガイシ) is a company that manufactures and sells electric power-related equipment. It specializes in energy storage systems, insulators, automotive ceramics, special metals, electronic components, hi-performance ceramics, industrial process products, and C1 home-use water purifiers. The company caters to the mobility, electronics, social infrastructure, environment, industrial equipment, medical and healthcare, aircraft, ship, space-related, and daily living sectors.