Sunny Electronics Corp. (004770.KS) manufactures and sells crystal oscillator products and related frequency control components in South Korea. The company offers crystal units, filters, crystal and MEMS oscillators, VCXO oscillators, TCXO oscillators, and VCTCXO oscillators; it also produces saw filters, monolithic crystal filters, and resonators for applications in consumer electronics, telecommunications, security systems, notebooks, LCD monitors, scanners, and switching hubs. Founded in 1966 and headquartered in Chungju, South Korea, Sunny Electronics operates primarily in the precision electronics industry, serving major clients such as Samsung and LG Electronics while expanding into automotive components through AEC-Q200 certification. The company maintains long-standing partnerships with top electronics firms and focuses on high value-added miniature components amid the fourth industrial revolution. In recent developments, Sunny Electronics announced plans to cancel KRW 2 billion worth of its own shares, reflecting ongoing capital management activities. Formerly known as Sunny Electric Engineering Co., Ltd., it changed its name to Sunny Electronics Corp. in March 1999.