1.air suspension seat 2. Truck seat, 3. Truck driver seat, 4. Imported air spring and valve in the seat. R2000B Luxury Pneumatic Suspension Seat Features and Technical parameter:1.Horizontal adjustment: double locking, operating elements front, stroke 210mm(10mm×21)2.Height adjustment : +100mm, infinitely adjustable3.Front tilt adjustment: adjust range -11°, five steps adjustable4.Backrest tilt ...