About Us
Your trusted fastener manufacturing partner since null
Who We Are
Founded in null, D.D has grown into a leading fastener manufacturer with a null sqm modern production facility and null+ skilled employees.
We specialize in manufacturing high-strength bolts, nuts, screws, and custom fasteners for construction, bridges, wind power, nuclear power, railway, and automotive industries. Our products are exported to null+ countries across the globe.
Production Equipment
Advanced manufacturing equipment for precision and efficiency
Cold Forging Machines
Multi-station cold heading for high-volume bolt/nut production
CNC Machining Centers
5-axis CNC machines for custom precision parts
Thread Rolling Machines
High-speed thread rolling for superior thread quality
Heat Treatment Furnaces
Automated quenching and tempering lines
Surface Treatment Lines
Zinc plating, hot-dip galvanizing, Dacromet coating
Quality Lab Equipment
Tensile testers, hardness testers, CMM, spectrometers
Quality Certifications
Certified quality you can trust
Want to Visit Our Factory?
We welcome customers to visit our production facility. Contact us to arrange a factory tour.
Contact Us →