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Custom high-end bag hardware OEM & ODM one-stop solution provider

1
What customization options are available for bag hardware and buckles?

Carosung offers customization options to help brands develop hardware that matches their product design, functional requirements, and brand identity.

Dimensions and Structure

Depending on the product, customization may include:

  • Overall dimensions, ring diameters, thickness, and weight.
  • Strap slot width and component fit.
  • Internal structures, springs, and locking mechanisms.
  • Assembly methods and functional details.
  • Product-specific tolerances and connection points.

Our engineering team can review drawings or reference samples and assess whether the proposed design is suitable for manufacturing.

Materials and Surface Finishes

Available material options may include zinc alloy, stainless steel, brass, and aluminum, depending on the product's structural and functional requirements.

Surface finishing options can include:

  • Bright polished and mirror finishes.
  • Satin and brushed finishes.
  • Matte and sandblasted textures.
  • Gold, silver, rose gold, gunmetal, and black finishes.
  • Vintage and antique effects.
  • Two-tone finishes using suitable finishing processes.
  • PVD coating and traditional electroplating.

The final finish depends on the base material, product geometry, surface preparation, and required appearance.

Logo Customization

Brand logos can be incorporated through suitable methods such as laser engraving, mechanical engraving, screen printing, or raised and recessed features designed into the mold.

The best method depends on logo complexity, material, production quantity, and the desired visual effect.

Decorative Details and Packaging

Where technically feasible, hardware can incorporate decorative elements such as crystal accents or leather inserts.

We can also discuss customized packaging, including protective bags, printed packaging, and retail gift boxes. Packaging specifications are confirmed according to the product and order requirements.

2
What kind of products does Carosung's factory mainly produce?

Custom Metal Hardware for Bags, Belts, and Leather Accessories

Carosung specializes in customized metal hardware for handbags, leather goods, belts, and related accessories. Our product range covers both decorative components and functional hardware.

Locks and Closures

Our range includes bag locks, twist locks, push locks, magnetic snaps, and other closure mechanisms. Designs can be customized according to the required appearance, dimensions, operating mechanism, and assembly requirements.

Available styles may include geometric locks, vintage-inspired designs, decorative crystal details, and two-tone finishes, depending on the project.

Rings, Hooks, and Connectors

We manufacture various hardware components, including:

D-rings and O-rings.

Swivel snap hooks and other connecting hooks.

Stainless steel and zinc alloy hardware components.

Selected brass components and other metal fittings, subject to project requirements.

Material, dimensions, load requirements, and surface finish can be evaluated according to the intended application.

Chains, Strap Hardware, and Brand Accessories

Our product range can also include suitable decorative chains, adjustable strap hardware, belt buckles, buckle heads, zipper pulls, metal logo plates, logo tags, magnetic snaps, and bag feet.

We specialize in metal hardware components rather than complete zippers.

Product availability and manufacturing methods depend on the design, material, structure, and required finish. Customers can share reference images, drawings, or samples for an initial feasibility assessment.

3
Is your bag hardware factory ISO 9001 certified?

ISO 9001 Quality Management Certification

Yes. Carosung's factory has obtained ISO 9001 certification. Our quality management approach covers key manufacturing activities, from incoming material inspection and production monitoring to final inspection and packaging.

Standard operating procedures help maintain consistency across production stages, while inspection records and corrective actions support ongoing quality improvement.

Product Testing and Regulatory Requirements

For customers selling into markets with specific chemical and product safety requirements, we can discuss suitable materials, surface-finishing options, and testing arrangements according to the product specifications and applicable regulations.

Relevant requirements may include:

REACH: European Union requirements concerning chemicals, including applicable restrictions and Substances of Very High Concern (SVHC).

RoHS: Restrictions on certain hazardous substances in products within the directive's scope.

California Proposition 65: Requirements relating to exposures to listed chemicals, where applicable.

Carosung has previously arranged testing for other customers against relevant requirements and obtained passing reports for those projects. These reports apply to the products and test conditions covered by the respective reports; they should not be interpreted as blanket certification of every Carosung product.

Testing can be arranged for a specific product or project when required. The applicable test scope and documentation should be confirmed according to the material, finish, destination market, and customer's compliance requirements.

Material Documentation

Material certificates and supporting documentation may be available depending on the material supplier, grade, and purchase requirements. Specific documentation should be confirmed before order placement.

4
What makes Carosung different from other bag hardware suppliers?

Flexible Customization and Manufacturing Support

Carosung supports brands at different stages of product development, from selecting existing hardware to developing fully customized components. Our services can include design evaluation, mold development, material selection, surface finishing, logo application, quality inspection, and packaging.

For selected stock products, customization may involve surface finishing and laser-engraved logos, offering a practical option for customers who need shorter lead times. Fully customized projects receive a more comprehensive development process based on their structural complexity and production requirements.

Surface Finishing Options

We offer PVD coating and traditional electroplating options, together with other finishes where applicable. The appropriate process depends on the base material, product structure, desired appearance, wear requirements, corrosion resistance, production quantity, and budget.

PVD coating can be suitable for applications requiring a durable decorative surface, while traditional electroplating offers a broad range of metallic colors and finishes. Both processes require appropriate surface preparation and process control.

Precision and Quality Control

Our manufacturing capabilities include CNC machining, metal stamping, die-casting, and manual or automated polishing. Dimensional tolerances are determined according to the product design, manufacturing process, and functional requirements.

We also evaluate surface quality before finishing to identify visible defects that may affect the final appearance.

Brand Protection and Packaging

We can support confidential product development, customized logo application, and private-label packaging. Where required, confidentiality agreements can be arranged to help protect customer designs and project information.

Our goal is to provide coordinated manufacturing support, practical technical advice, and consistent quality management throughout the product development process.

5
Are you a bag hardware manufacturer or a trading company?

Direct Manufacturing and OEM/ODM Services

Carosung is a bag hardware manufacturer based in Guangzhou, China, specializing in OEM and ODM solutions for brands seeking customized metal accessories. Our manufacturing facility covers 3,000 square meters, supported by an annual production capacity of up to 1 million pieces.

By working directly with our manufacturing team, customers can communicate their design requirements, discuss technical details, and coordinate product development more efficiently.

In-House Manufacturing Capabilities

Our core manufacturing processes include:

  • Zinc alloy die-casting for complex decorative and functional components.
  • Metal stamping for suitable flat and formed components.
  • CNC precision machining for detailed structural features.
  • Manual and automated polishing for different surface requirements.
  • PVD coating and other surface-finishing processes.

For additional production capacity and specialized processes, we also work with a network of 12 partner factories.

Engineering Support and Quality Management

Our team includes three CAD specialists who support technical drawings, and product development. Before tooling begins, our engineering team can review designs, assess manufacturability, and recommend adjustments to dimensions or structures where necessary.

This manufacturing model combines direct communication, engineering support, and coordinated production to help customers develop hardware that meets their design and functional requirements.

 Contact Us

Do you have any questions? Contact us now.

We are a professional ODM/OEM manufacturer of custom bag hardware and belt buckles, offering high-quality, compliant, and fast-turnaround solutions for global fashion brands.
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