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shaking chair / Fire extinguisher case / chair

shaking chair
shaking chair

(Fire extinguisher shaking chair)
If you leave fire extinguisher unused for to long, powder will set hard.
Fire extinguisher is not working at emergency
If shake fire extinguisher,it long use.
without special action as usual.
Sit this chair, fire extinguisher is revolved, through the agency of weigh.
So fire extinguisher powder have mixed well.


inje Univ

inje Univ
kim hae, South Korea

professor yeon sik Yoo


inje Univ

inje Univ
kim hae, South Korea