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1)function: closing and latching speed can be adjusted.
2)materail: die casting aluminum
1. Have two or three valves to control the closing and latching speed and have back check function
2.This series is super oil pressing door closer, it's outer is made of aluminum alloy cated, outline modern.
3. It's gear and piston are made of steel of carbon structure, process by heat treatment may times. good quality, steady and precise performance.
4. The spring is made from super material, process by heat treatment strengthen treatment. Ensure the door closing strenth and using life.
5. Be applicable all kinds of metal door aluminum door and wooden door. It's can be fit with the door left opening or right oping. 6. It's optional matching localing arm, stoping at any angle.
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