OEM/ODM Manufacturing Capabilities—Your Direct-to-Factory Solution

Based in Dongguan (Changan), China—the global epicentre for premium hardware and stainless steel jewellery manufacturing—Jinyuan Jewellery leverages 16 years of direct-to-factory expertise. We operate a fully integrated production facility specialising in custom engineering, high-volume OEM/ODM manufacturing, and private-label brand scaling.

9-production-lines

We operate under a strict B2B model—offering only custom services, with no retail or spot wholesale. By centrally managing every stage of the process—from steel cutting and wire processing to heavy-duty machining, automated diamond setting, and multi-step hand polishing—we have completely eliminated quality fluctuations and optimised manufacturing profit margins for global brands.

Heavy Manufacturing & Forming Capabilities

We deploy four distinct industrial forming methodologies to achieve any complex geometry, structure, or volume your jewellery line requires.

1. Investment Casting (Lost-Wax Casting)

Stainless steel earrings lost-wax casting

Engineered for highly intricate, three-dimensional, fluid, and organically shaped jewellery designs that cannot be achieved through pure machining.

  • Applications: Highly detailed skull rings, gothic-themed collections, textured 3D charms, and heavy-relief biker jewellery.
  • Process Quality: Vacuum-pressure casting ensures high-density metal structures, minimising internal porosity to guarantee a pit-free finish during polishing. Learn more about how we maintain these standards in The Complete Guide to Stainless Steel Jewellery Quality Control.

2. High-Tonnage Hydraulic Pressing & Stamping

Stainless steel pendant hydraulic forming mold

The gold standard for high-volume, high-efficiency production requiring extreme crispness in 2D and 3D surface embossing.

  • Applications: Razor-sharp embossed logo tags, coin pendants, multi-layered structural components, and high-strength blanks.
  • Advantage: Provides exceptional surface hardness and identical geometric precision at a highly competitive economy of scale.

3. High-Precision CNC Machining & Engraving

Stainless steel jewelry CNC machining workshop

Built for luxury-tier fashion lines, minimalist collections, and mechanical jewelry components demanding ultra-sharp lines.

  • Tolerance Controls: Multi-axis CNC milling, turning, and engraving centres achieving precision down to +/-0.02 mm.
  • Application: Premium minimalist bands, mechanical locking clasps, modular charms, and heavy-duty men’s chains carved straight from solid steel blanks. For custom development, explore our design rules for High-precision CNC-machined jewellery for luxury brands.

4. Advanced Laser & Wire EDM Cutting

Stainless steel pendant laser cutting
  • Laser Fibre Cutting: Enables rapid, high-precision flat-pattern cutting for custom plate necklaces, intricate filigree earrings, and personalised nameplates directly from stainless steel sheets.
  • Wire EDM (Electrical Discharge Machining): High-precision wire cutting is utilised to create ultra-precise custom moulds and to process hardened steel tooling with zero thermal distortion.

Specialised Assembly & Precision Processing Equipment

Our assembly workshop utilises specialised industrial machinery to handle complex fabrications, delicate welding, and high-speed embellishments.

Precision Welding

Precision Laser Welding: We utilise specialised laser-welding workstations to produce high-strength, seamless micro-joints. This ensures clean, invisible weld lines on chain links, earring posts, and structural settings without damaging surrounding metals or gemstones.

Diamond setting and gluing in stainless steel bracelets

Automated Rhinestone & Stone Pointing: For high-volume pave and multi-stone crystal designs, our automated CNC stone-pointing machinery ensures consistent depth, rapid throughput, and flawless alignment that traditional hand-gluing cannot replicate.

Multi-Stage Polishing & Mould Deburring

Stainless steel jewelry polishing

The tactile feel and surface gloss determine a piece’s retail value. Our dedicated polishing and mould-finishing department operates a rigorous multi-stage workflow:

  • Mould Deburring & Pre-Form Finishing: Every raw casting or stamped blank undergoes mechanical deburring to smooth rough edges and optimise foundational geometry.
  • Centrifugal Tumbling & Barrel Polishing: Automated mass-finishing processes utilising ceramic, plastic, and walnut-shell media to achieve uniform surface smoothing across high-volume batches.
  • 100% Mirror Hand-Polishing: Experienced craftsmen utilise specialised cloth and hemp wheels, along with premium polishing compounds, to eliminate all micro-scratches, achieving a flawless, zero-blemish, ultra-reflective mirror finish.

Technical Specifications & Compliance Standards

1. Raw Materials We Process

  • 316L Surgical Stainless Steel: Our primary alloy for premium brands. Marine-grade, exceptionally low carbon, 100% hypoallergenic, and completely resistant to corrosion from sweat, perfume, and saltwater.
  • 304 Grade Stainless Steel: Utmost tensile strength, optimal for high-durability chains, heavy-duty bangles, and foundational structural elements.

💡 Technical Reference for Sourcing Managers: Unsure which alloy fits your budget and durability targets? Read our full metallurgical analysis: 316L vs. 304 Stainless Steel Jewelry: A Comprehensive Guide.

Polished & PVD Coating

2. Multi-Colour PVD Vacuum Plating (Waterproof & Non-Tarnish)

All plating is conducted in chemical cleanrooms using Physical Vapour Deposition (PVD) to coat steel with ultra-hard Titanium Nitride.

  • Colour Profile: Authentic 18K Yellow Gold, Warm Rose Gold, Deep Jet Black, Gunmetal Grey, and Rainbow gradients.
  • Performance: Sweat-proof, ocean-ready, and outdoor-ready. Guaranteed against tarnishing, green skin staining, or flaking under daily wear. Check out our proprietary chemical sealing process in electroplating & PVD for stainless steel jewellery: A complete guide.
  • Compliance: 100% Lead-free and Nickel-free. Fully compliant with EU REACH standards and California Proposition 65.

OEM vs. ODM Project Management

Whether you have finalised engineering blueprints or just a rough concept, our in-house 3D design and technical sales teams streamline development to minimise your time-to-market.

  • OEM (Original Equipment Manufacturing): Send us your 3D CAD files, tech packs, or physical samples. We guarantee 100% accurate replication, dedicated custom mould building, and exact mass production scaling.
  • ODM (Original Design Manufacturing): Send us your design concept, mood board, or reference images. Our engineering team will output detailed 3D CAD blueprints within 24–48 hours for your structural review before mould-making.

Turnkey B2B Supply Chain Solutions

  • Custom Branding & Packaging: Production of custom debossed microfiber pouches, sustainable FSC gift boxes, and anti-tarnish backing cards.
  • Compliance & Logistics: Complete application of SKU barcodes and country-of-origin labelling. Full logistical support for DHL/FedEx air express, sea freight, and Amazon FBA warehouse ingestion.

Get a Free Quote for Your Custom Project

We provide comprehensive OEM and ODM engineering solutions. Please share your corporate requirements below, and our project manager will respond within 12 business hours.


    Scroll to Top