Buyang Group (步阳集团有限公司) designs, manufactures and sells security doors, steel entrance doors, custom doors, fire doors, steel-wood doors, wooden doors and smart locks. The group’s Yongkang headquarters covers 600,000 m2, runs 11 door production lines and a 5G smart factory, and has further production bases in Shandong and Sichuan. Its fire doors have held national fire safety certification since 2002. Its insulated entrance fire doors hold fire product certifications 5982026ZY300090 and 5982026ZY300078 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.