*CPR board have great help on the first-aid and training,enabling the patient through out the rescue process always keep the airway open the correct loaction,better for patient with cervical spine injuries,in the CPR process to avoid the airway open position to take the rise of the secondary damage caused by cervical spine.
*Compression plate by high-density polyethylene plastic,the surface of solid,one end of the concave to maintain the patient's head and heads off.