The D-I hydraulic directional shifters were previously marketed under the name Dong-I.
The name has changed, but not the quality.

The main features of D-I hydraulic directional valves:

• Favourable price
• High quality
• Reliability
• Same transmission in both directions
• Same load capacity in both directions
• Hydraulic directional shift linkage
• Easy maintenance
• Can be mounted on the engine or fixed independently of the engine
  Engine-mounted versions are equipped with vibration-reducing clutch
  Also available with electric remote control