: Dongguan Hezhi Hardware Co., Ltd.

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High Carbon Steel Flexible Rolling Constant Force Spring Reel For Door Lock

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Dongguan Hezhi Hardware Co., Ltd.

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High Carbon Steel Flexible Rolling Constant Force Spring Reel For Door Lock

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High Carbon Steel Flexible Rolling Constant Force Spring Reel For Door Lock

High Carbon Steel Flexible Door Lock Rolling Reel Spiral Torsion Spring Description A constant force spring is a device used to start a machine by winding up a sheet of steel and using its elasticity ...

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Flexible constant force spring reel

Rolling constant force spring reel

Rolling Reel Door lock Spring

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