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Cast steel series of natural gas shut-off valve
Natural gas shut-off valve aluminum alloy series
High pressure gas shut-off valve series
Normally closed gas shut-off valve series
Gas hammer type electromagnetic shut-off valve
a burglar alarm
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DRQF-25C
...
DRQF-25C
DRQF-25C-DN50
DRQF-25C-DN80
DRQF-25C
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