Hello everyone! I’m a professional suspension spring expert at Longdong Automotive Suspension Spring Factory. We specialize in the research, development, and production of high-quality automotive suspension springs, supplying numerous auto brands and OEMs. Today, I’d like to share with you the core advantages of our products!

1. High-precision manufacturing for consistent and reliable quality

We use advanced CNC cold coiling machines to ensure that each spring meets stringent standards for stiffness, free height, and fatigue life. 100% inspection ensures consistent performance of your vehicle’s suspension system.

2. High-quality materials for greater durability and safety

We select high-strength alloy spring steels (such as 60Si2MnA and 55Cr3) and undergo a special heat treatment process to enhance their fatigue and corrosion resistance. Our springs maintain long-lasting support even under extreme road conditions, extending their service life by over 45% compared to traditional springs!

Performance Guarantee

Each batch of springs undergoes the following tests before leaving the factory:

✅ Fatigue testing – simulates 300,000 compression cycles to ensure long-term stable spring deformation

✅ Stiffness testing – precisely controls spring stiffness to ensure a balance between comfort and support

✅ Salt spray testing – corrosion-resistant treatment to extend service life

5. Customized services to meet individual needs

If you have special needs, such as:

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Lowering vehicle height (shortening springs)

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Increasing load capacity (increasing spring stiffness)

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Improving off-road performance (increasing spring travel)

We offer customized services to create a unique suspension experience for you!

If you require OEM-quality suspension springs, please contact us! We will provide professional technical support and after-sales service to ensure your vehicle’s ride is smoother and safer! 🚗💨

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Contact Hotline: 8617320205821

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Factory Address: No. 36, Industrial Zone, Jinnan District, Tianjin, China