Nov, 2017 Guang-Chao obtained UL rolling steel insulated fire doors Product Lens certification.
Nov, 2017 Guang-Chao obtained UL rolling steel insulated fire doors Product Lens certification.
April and May 2017 news
May, 2017 Guang-Chao obtained UL rolling steel insulated fire doors 250F certification. May, 2017 Guang-Chao obtained UL 3 hours horizontal rolling steel fire doors certification. April, 2017 The Quality Management System of Guang-Chao has been approved by ISOQAR to the following standard ISO9001：2015.