Economic Double Action Floor Spring(M25) 
The floor spring has the following characteristics: 

1.Surface Paint: No painting peel off  
 2.We have passed five different test process(such as pressure-relieving processing) to prevent the oil spill.   Leak  rate:0.3% 
3.Unpack Passed Rate:99%
4.We use the hydraulic oil with Anti-fire, Anti-burning, Anti-freezing,could be operated at –45℃                                                                                               
5.The main parts of the machine core have been done the heat treatment processing,it can prolong the working life.
6.Max door capacity:150kg  
7.Max door opening angle:105 degree    
8.Max door width& height:1400mm×2500mm                                                                                                                                                     9.Dimension of appearance :305×155×58mm                                                                                                                                                 10.Lowest working temperature:–45℃                                                                                                                                                     11.Tested cycles:500,000
12.Hold-open at 90degree    
(double action open floor spring)