HP-2A02 Emergency Ambulance Stretcher Service For Ambulance Car Used For Patient Transfer1)The main material is high strength aluminum alloy which is hardened and surface treated. Backrest and knee angles are all adjustable. 2)The mattress is seamless welded with sealed high density polyethylene coated nylon material, its waterproof, thickness 65mm. 3)Equipped with aluminum alloy adjustable guardrails and two safety belts for the convenience and safety of patient transport. 4)Equipped with adjustable two stage I. V. Stand, The maximum