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Fire Rated
Life Time: 500 000 times
With stop functional position at 90 degree and non-postioning at 180 degree
The body is made of casing aluminium alloy with 3-layer bright lacquer coating.
Piston rack made of chrome steel treated with high frequency modulation, made the product more long service life.
Adjustable speed closing section is 180-20 and the force adjustable locking section 20-0
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