Dianguang Explosion-proof Technology (电光防爆科技股份有限公司) was founded in Yueqing in 1993 and listed on the Shenzhen Stock Exchange in 2014 (stock code 002730). It supplies explosion-proof electrical solutions for mining, oil and gas, and industry. Products include mining switchgear, frequency converters, permanent-magnet motors, explosion-proof LED lighting, explosion-proof emergency lights, fire emergency sign luminaires and smart-mine systems. Subsidiaries operate in Zhejiang, Shanghai, Beijing, Anhui, Hebei and Liaoning. Its fire emergency luminaires, evacuation sign luminaires and central power supplies hold fire product certifications 2026291815000127, 2026291815000091 and 2026291815000080 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.