... the Hydraulic Door Opener GYKM100/240 is an indispensable small rescue Hydraulic Door Opener GYKM100/240 is designed to work ... and other metal structures, so as to come to immediate rescue of stranded victims or endangered objects.Beautiful, competent, reliable ... , the Hydraulic Door Opener GYKM100/240 is an indispensable small rescue tool to fire brigades, traffic departments, industrial and mining ...