Products
The company specializes in manufacturing high-strength standard parts, bolts, welding nuts, retaining rings, rivets, and other products
Specializing in custom manufacturing for many years
Specializing in the production of high-strength standard parts, bolts, welding nuts, retaining rings, rivets, and more—products tailored for industries such as automotive and refrigeration compressors.
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Established
About Us
Wenzhou Longwan Qiancheng Auto Parts Factory
Wenzhou Longwan Qiancheng Auto Parts Factory was established in 1988 and is located at No. 159 Airport North Road, Longwan District, Wenzhou City, Zhejiang Province. As a key backbone enterprise in the district, the factory specializes in manufacturing high-strength standard components, including bolts, welding nuts, retaining rings, rivets, and more—products widely used in the automotive and refrigeration compressor industries. Currently, the company offers over 200 varieties of high-strength bolts ranging from Grade 8.8 to Grade 12.9, all produced using advanced, chlorine-free, and decarbonization-free bright heat-treatment processes. These products are supplied to more than ten major domestic automakers and have earned recognition from customers as a premium-quality supplier partner...
ADVANTAGE
WHY CHOOSE US
Our strengths
Specializing in the production of high-strength standard parts, bolts, welding nuts, retaining rings, rivets, and more—products tailored for industries such as automotive and refrigeration compressors.
View detailsYears of industry production experience
Factory-supplied, with a wide variety of products and styles to meet your one-stop shopping needs.
Human-centered management model, rigorous testing methods.
Providing customers with high-quality products
We have extensive industry experience and offer short lead times for delivery.
Real materials, great-to-use products
Thoughtful service support
Product quality and service have both been widely recognized and trusted by users.
Customized design to meet your needs
24-hour after-sales response with thoughtful, attentive service
Shopping assistance and technical guidance to make your selection even easier.
Logistics company handles transportation, with a signed contract ensuring protection—damage fully compensated.
Latest Blog
Step into Qiancheng Auto Parts and stay updated on our latest news and developments.
10
2025
Seemingly traditional fasteners are entering a technological boom, with four major trends—high-strength materials, intelligent upgrades, 3D printing, and sustainable development—driving this fundamental component into a whole new phase of growth.
View details10
2025
At the material level, molybdenum-chromium-modified alloy steel combined with deep cryogenic treatment refines the steel's grain size from Grade 8 to Grade 10, increasing its fatigue life by 50%. Additionally, the impact energy at a low temperature of -40°C significantly exceeds the national standard.
View details10
2025
In the manufacturing of lightweight products such as smartphones and new-energy vehicles, fastening thin substrates thinner than 3mm has long been a major industry challenge—direct tapping easily leads to cracking, while welding nuts often causes deformation. Traditional methods have consistently struggled to strike the right balance between efficiency and precision.
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Contact Us
Sun Erdi:86-13757701566
Sun Xianglin:86-15988797777
Switchboard:86-577-86374313
Phone:86-577-86893778
Fax: 86-577-86880829
Email:254421787@qq.com
Address: No. 159 Airport North Road, Longwan District, Wenzhou City, Zhejiang Province
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