Ningyuan Fastener
Ningyuan Fastener
Handan Ningyuan Fastener Manufacturing Co., Ltd. (formerly Jin Langtao), founded in 2005, is situated in Handan Yongnian—the globally recognized "Fastener Capital" of China. For nearly two decades, we have evolved from a specialized boutique workshop into a large-scale manufacturing powerhouse.
With a sprawling 20,000 m² factory floor and over 50 sets of advanced precision production equipment, we represent the pinnacle of Chinese fastener engineering. Our philosophy is simple: "Development is the direction, and hard work is the truth." This mantra has driven us to exceed 70 million yuan in annual sales, serving industries ranging from high-end eyewear hardware to massive photovoltaic energy systems.
In the world of eyewear, the difference between a luxury product and a budget alternative often lies in the hardware. Sunglasses screws are not merely fasteners; they are precision-engineered components that must withstand thousands of opening and closing cycles while maintaining perfect tension. Chinese factories have transitioned from high-volume production to "High-Precision Micro-Engineering," utilizing Swiss-type CNC lathes and multi-station cold heading machines to produce screws with diameters as small as M1.0.
Sunglasses are constantly exposed to human sweat, skin oils, and environmental humidity. To combat this, the leading China Sunglasses Screws Factories utilize premium materials including:
Modern B2B buyers are no longer just looking for "cheap" parts. Analysis of search intent reveals a shift toward E-E-A-T compliant suppliers who can provide full traceability, REACH/RoHS certifications, and rapid prototyping. The "Sunglasses Screws Factory" in 2024 must offer Macro Industry Solutions, which include integrated hinge-and-screw assemblies to reduce assembly time for eyewear brands.
With 6 senior technicians and 25+ patents, we operate a municipal-level fastener research center, ensuring every screw meets micron-level tolerances.
Certified by ISO9001, ROHS EU testing, and GB/T30512. Our laboratory performs salt spray testing to guarantee 48-96 hour corrosion resistance.
From photovoltaic brackets to micro dry-wall nails, our production covers the entire spectrum of high-end fastening systems.
Located in the fastener capital, we leverage the world's most efficient supply chain to ensure rapid delivery to Europe, Americas, and SE Asia.
We provide free samples of regular products and technical installation guidance, reducing the entry barrier for new eyewear startups.
Our products aren't just for sunglasses; they are the backbone of modern infrastructure and consumer electronics:
For standard stainless steel micro-screws, our MOQ starts at 50,000 units. For specialized titanium or custom-plated screws, it may vary based on design complexity.
We utilize advanced "Nylok" blue-patch technology or anaerobic adhesive coatings that create a friction-lock, ensuring hinge screws stay secure throughout the product's life.
Absolutely. All our fasteners, including our dry-wall nails and hexagonal bolts, undergo ROHS EU testing and meet GB/T30512 automotive banned substance standards.
Yes, our technicians provide fastener solution rate analysis and installation guidance to help you optimize your automated eyewear assembly processes.
