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By changing the original armrest,applying different of force
grab the armrest. Hold the handle to push the slider in the
handrail’s track. The rang of the handle can turn 180 angle.
When the elder falls down the handle can lock the slider and
cause injuries.Young child who are not tall eought also can
use when it turn down.
This is a brend new way for securing both senior & younger
people,using the same way ,it’s cheep.efficrency,also fits in
National Taipei University of Technology