Hebei Haohai Doors and Windows (河北浩海门窗有限公司) designs, makes and sells steel doors. Its range includes security doors, fire doors, steel fire windows, entry-intercom doors, steel and inorganic-fabric fire shutters and louvres. The plant is in Liugusi Town, Hejian, and the company runs its own after-sales service network. Its steel and other non-insulated fire windows hold fire product certifications 5982023ZY050166, 5982023ZY050167 and 5982023ZY050164 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.