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产品说明：
1. 采高强度铸铝合金本体，可连续使用50万次不损坏.
2. 精密机械加工的活塞与齿轴设计，用特殊的高强度钢制造，
确保闭门器长时间宁静高效运行
3. 本产品采用防冻液压油，在-40C°--40C°都可正常运行
4. 可选择缓冲功能减少门被推至最大开角时的震动
5. 本机体设有两个调节螺订，可分别调节0-30度与30-90度的速度
6. 可选择在90-180度间的定位装置
7. 可根据门重和门宽选用不同的型号
8. 可装在防火门上，自动关门隔离空调、烟雾、异味、火势蔓延，
安装在防盗门上还还可起到防盗作用 9. 载重范围：30KG
1. Adopting high strength die-casting aluminum alloy, it will
not occur any damage when using 500,000 times
2. The exquisite design of process piston and wheel, make
closer to operate quietly and efficiently for a long time.
3. This product adopts anti-freezing pressure oil, so it
can operate normally - 40℃ to +40℃.
4. Choosing the function of cushion to reduce the shake
of pushing the door at most angle.
5. This machine have two screw of regulating valve,
which regulate respectively speed from 0---30 degree and from 30---90 degree.
6. Choosing locate set at 90---180 degree.
7. It can choose different model to install according
to weight and width of door.
8. It can close the door automatically to divide an air
condition, smoke, strange smell and fir speeds when installing
on the door of anti-fire; it can also guard theft when installing
on the door of goading theft.
9. The concealing door closer of super thin type can
install easily on the frame of door, and improve beautiful
decorate of look,; it is fit for installing the room of hotel
and cabaret, and it can also install on the left and right hand
door, do not need to adjust.
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