HP-2G03 Hospital Aluminum Alloy Ambulance Stretcher Loading Bed For Sale1. The main material is high strength aluminum alloy which is hardened and surface treated. 2. The height of front part,back part and the whole stretcher can be adjusted in 12 positions. The loading height is 60 64cm. 3. Equipped with aluminum alloy adjustable guardrails and two safety belts. 4. The mattress is seamless welded with sealed high density polyethylene coated nylon material, it's waterproof,thickness 65mm. 5. Equipped with adjustable two