Kyocera do ceramics, and things which use ceramics
Kyocera basically do what it is on the tin -- Kyoto Ceramics.
Kyocera got into laser printers via ceramic components in the high-temperature fuser unit. Kyocera got into kitchenware via knives via ceramic blades. Kyocera got into smartphones via ceramic speakers, which are now the norm across all thin devices from phones to TVs. Their newer rugged phones use the entire front glass as both a speaker and a tissue conduction actuator (which means you can use the phone without removing hearing protection, just hold the phone touching the earmuffs).
Basically the company makes components and if it sees a hole in the market it is selling components into, then it fills the gap.