features 
mechanical structure:
1.The column of lift  is widened  to ensure the strength of the column
2.Block high strength pipe, deformation in 10 years.
3.Quick change type reinforced nylon slider(with self-lubricating).
4.Enhance the pull board double arm, widely applicable model.
5.Balance wire rope use double fracture resistance design and high strength alloy steel stranded wire and steel core, affter the pre-tension technology.
Drive mode
Hydraulic double cylinder drive/traction/ chain/wire rope adjusting balance. 
hydraulic/electric system
   1.Oil cylinder adopt the new rolling process cylinder/combined seal, double support guide and have stable under high load characteristics under long stroke..
   2.Pieces of high quality hydraulic pump station, provide stable hydraulic supply(with overload protection)