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High-Strength Black Torsion Spring | Custom Heavy-Duty Industrial Spring
High-strength black torsion spring made by a professional spring manufacturer. Crafted from premium alloy steel with excellent durability and corrosion resistance. Custom sizes, torque, and coatings available for industrial and mechanical applications.
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Factory-direct supply with stable quality
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Customizable size, torque, and surface finish
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Made of premium alloy steel for durability
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Black anti-corrosion coating for longer lifespan
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Ideal for industrial, automotive, and fitness equipment