BrightKing (Junyao Electronics) is a supplier of circuit-protection components that formally joined the YAGEO Group in September 2018. Focused on the circuit-protection field, its product lines cover metal-oxide varistors (MOV), transient-voltage-suppression diodes (TVS), ceramic gas discharge tubes (GDT), glass gas discharge tubes (SPG), ESD protection components, surge-suppression thyristors (TSS), resettable fuses (PPTC) and NTC thermistors, providing customers with complete circuit-protection solutions. Its products are widely used in home appliances, power supplies and chargers, green lighting, network communications, automotive electronics and smart meters and instruments.