Dorrenhaus is a professional Chinese manufacturer of commercial door closers with over 15+ years of factory experience. Our product range covers automatic fire rated door closers, heavy-duty hydraulic door closers, concealed door closers, hold-open arm door closers and surface-mounted door closers, all certified by UL, CE, EN1154 and ANSI Grade 1, meeting ADA accessibility requirements.
Every door closer undergoes strict quality inspection from raw material casting to final packaging. We supply wholesale door control hardware for hotels, office buildings, hospitals, shopping malls and public construction projects worldwide. OEM service, custom logo and bulk project pricing are available for global distributors and contractors.
