Leading manufacturer of springs for garage door and industrial door. We are specializing in manufacturing garage door hardware,windows,handle,spring etc. various kinds of spring are available, We also can manufacture the spring according to your requestfeatures:Galvanized torsion spring&Non-galvanized torsion springDIN 17223 Zink thickness 9mmLength of spring:500mm-3800mmDiameter of wire:5.0mm-11 ...
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