Introduction: Matsuo is a manufacturer and seller of tantalum capacitors, thin-film capacitors, and circuit protection components. Matsuo's products are mainly divided into tantalum capacitors: chip tantalum capacitors, lead containing tantalum capacitors, circuit protection components: current fuses, surge absorbers, and film capacitors. Its product application markets include aerospace, automotive (drive/safety), automotive (car navigation), industrial instruments, fire alarms, power tools, electric assisted bicycles, personal computers, displays, electrical equipment (SSD · HDD), hearing aids, portable audio players; Matsuo official website: www.ncc-matsuo.co.jp.