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Humen Nance Jianmin Road. 1 - 20,Dongguan,Guangdong,China China
A torsion spring can be closed- or open-wound and usually is designed to wind up. As a torsion spring winds up, the coil diameter will decrease and th
Personne àcontacter Mr. Jame TOM
Nom de la société Humen Nance Jianmin Road. 1 - 20, Dongguan, Guangdong
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