Important quality control * Baosteel from fortune global 500 * Panasonic robotic ensure * 360° full smooth welding * Environmental plastic can be sterilized in 100°C, tensile upto 30MPa * 11 Process epoxy painting, ASTM testing anti-baterial, paint thickness 0.12mm, brightness 60°, paint can resist 50kg impact * 2 function: backrest by qualified airspring, height adjustment by solid crank system * We use metal dust protection for crank system, more endurable than plastic cover * We use robust tube in weight bearing structure * Cover all metal srews with rubber cap, protect screws form possible corrosion * 4 hooks for IV pole * Back lift can be up to 80 degrees, make patient more conformtable when needed * With strips to provent patient from possible slide off the stretcher * Four double side casters of 6 inch diameter, simultaneously lockable by the step pedal at both sides. * With direction wheel, which help nurse staff to push trolley to go straight easily by one person. * TPR tire no worn out after running 30KM, save anti-winding hard shell, united forming without bolts * Pass dynamic test: one caster bearing 120kg run 30KM and pass obstacles 500 times * Stainless steel handle, more durable * Adjustable vertical oxygen bottle, load capacity: 15kg