500 series door closer

We are one of the most professional and largest manufacturers of door closerin China.Our products are very popular in many markets,such as North Amercia,South Amercia,Russia,Middle East,India,Southeast Asia.500 series door closer are very popular series in ourproduct range.It has the following features: 1.UL Listed,1 million cycles or 5 years guaranteed 2.Universal application,designed for all standard installaion 3.Power size range:1 5,with various closer body 4.Two separate valves for closing & latching speed adjustment 5.Optional back check function:503BC,523BC,504BC,505BC door closer 6.Optional built-in Hold Open type:501D,502D,503D door closer 7.High quality hydraulic fluid,low freezing-point,door closer operates smoothly from temperature -30 to 40 8.Reinforced type adjustable tube arm 9.Standard packing without parallel arm bracket.The bracket is provided upon request 10.Finish selection:silver,bronze,gold.Any other finishes is available upon request 11.Decorative PVC cover ro 502,503,504 door closer,steel cover for 502 door closer only