Dalian Golden House (大连金屋门窗制造) manufactures hollow-metal and timber fire doors and pressed steel frames for North American commercial, education and healthcare projects, with a distribution arm in California. Its doors and frames are fire tested to UL 10B, UL 10C, NFPA 252 and ASTM E2074 and produced under UL Listing, FM Approvals and the Intertek Warnock Hersey factory inspection and labelling programme, covering twenty-minute to three-hour assemblies. It also operates as an authorised Warnock Hersey fire-label shop, which allows re-certification and labelling of modified openings. Certificate numbers are not published on its site, so the UL, FM and Warnock Hersey listing references are worth requesting before specifying.