GUANGYI DOOR  boasts more than 80 years of experience in the production of steel fire-rated doors. With GUANGYI DOOR steel fire-rated doors, you are guaranteed with decades of quality and safety assurance. All steel fire-rated doors of GUANGYI DOOR have passed the tests of Certificate for Fire Product Certification and National Standard of the People’s Republic of Vietnam,China, USA, and all procedures including design, production and after-sales service are subject to the requirements of ISO 9001 Quality Management System (QMS) . Therefore, GUANGYI DOOR steel fire-rated doors are widely used in the fire zones from industrial and mining enterprises, public institutions, residential projects, hospitals and aviation companies, etc.