Precision metal tooling in a manufacturing workcell

GAIRUN · CUSTOM METAL MANUFACTURING

Custom Zinc Die Casting Manufacturer for Your Project

From your drawing to a defined manufacturing solution.
Tooling, zinc alloy components and project-specific finishing.

Request a project review Explore our capabilities

Tooling & design reviewStart with the part requirements

Zinc die castingDefine the manufacturing route

Finishing & assemblyAgree the supplied condition

ENGINEERING THE RIGHT START

A manufacturing partner.
A clearly defined project.

Get to know GAIRUN →

Gairun is a custom zinc die casting manufacturer in Shenzhen, China, with experience in custom metal awards and promotional products. We work from artwork, drawings and agreed requirements to define tooling, metalwork, decoration and the supplied product. For a new component, the proposed route is assessed against its function and approval requirements.

Use this site to explore four custom product sectors, compare manufacturing considerations and prepare a project enquiry. Products are made to an agreed design and scope; the pages are not a ready-stock retail catalog. You can start with a concept, a released drawing or a part you need to source again.

PRODUCT SECTORS

Four routes into a manufacturing project

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Industrial and mechanical components

Industrial enquiries focus on the component's duty, mating interfaces and operating conditions. Housings, selected small transmission parts, connector shells and other shaped components need different validation. Pressure, temperature, wear and long-term loading must be considered where relevant.

The industrial component sector explains these distinctions. It separates ordinary covers from pressure-containing bodies and electrical connector shells from fluid fittings. This helps buyers provide a brief that describes the real engineering task.

Explore industrial & mechanical

A coordinated selection of architectural hardware made from zinc alloy: one restrained cabinet pull, door lever on a plain round rose, square bathroom robe hook and small furniture connector

Architectural and furniture hardware

Hardware combines visible surfaces with repeated use. Door and cabinet handles, lock housings, selected hinge components and accessory mounts need a defined relationship with fasteners, panels and surrounding assemblies. Finish and installation requirements should be considered together.

The architectural hardware overview covers the main product directions and their qualification questions. Glass fixtures and other safety-related applications require particular attention to the complete installed system.

Explore architectural & furniture

Custom gifts and promotional metalwork — product overview

Custom gifts and promotional items

Metal gifts translate artwork into objects that people wear, carry or display. Medals, coins, pins, openers and keychains need distinct design approaches because their attachments, working features and presentation differ. A coordinated brand program can use several formats without forcing the same layout onto each.

Explore custom gifts and promotional metalwork to compare product choices. Dedicated pages address ribbon planning for medals, two-sided relief for coins, wearable attachments for pins and functional connections for carried accessories.

Explore gifts & promotional

Consumer electronics and daily essentials

Consumer component projects often combine cosmetic quality with close assembly interfaces. Device cases, stand parts, bag hardware, perfume caps and audio-related metalwork need the actual mating components and use conditions for review. A metal shell is only one part of the finished product.

The consumer component sector distinguishes these duties and explains where product-level evaluation is necessary. It also identifies the additional market review required for regulated component directions.

Explore consumer components

YOUR PROJECT, DEFINED

What you can discuss with Gairun

Gairun's custom product work includes metal medals, challenge coins, pins, badges, keychains and bottle openers. These projects bring together artwork, tooling, metal forming and decoration. For a new industrial, hardware or consumer component, start with the specific part and the evidence needed to approve its manufacturing route.

Choose the starting point that matches your project:

Your starting point	Useful first information	Decision to resolve
A logo or product concept	Artwork, intended use, approximate size and quantity	Product construction and development scope
A released component drawing	Model, drawing revision, finish and critical requirements	Proposed supply condition and quotation scope
A replacement-source project	Controlled specification, approved sample and current problems	Interchangeability, process changes and qualification

The commercial discussion should identify tooling, samples, recurring parts and any separately requested assembly or testing. This makes it possible to evaluate the offer against what your team actually needs to receive.

Illustrative zinc alloy coin, medal, enamel pin and bottle opener

A STRUCTURED MANUFACTURING APPROACH

From concept to an approved production definition

The first step is to establish what the finished product must be. Provide the available files and explain which features are fixed. If there is room to adjust the geometry, identify the function or appearance that must be preserved so alternatives can be considered meaningfully.

Manufacturing review then connects the design with tooling, forming and later operations. Parting lines, draft, relief, attachment locations and visible surfaces may need discussion. The tooling page describes how approved geometry becomes a physical forming tool.

Samples provide evidence for the next decision. A physical sample can show fit, appearance and selected functional behavior, depending on how it is made and tested. Approval should refer to the defined construction and revision, with corrections recorded before production proceeds.

The quotation should distinguish tooling, samples and recurring production. It should also state the supplied condition, inspection requirements and packaging. This gives purchasing and engineering teams a common basis for approving the order.

See the project process →

Three zinc alloy sample coupons with brushed satin nickel, polished silver and antique brass-like finishes, alongside a simple unbranded machined housing

MATERIAL. GEOMETRY. FINISH.

Match the process to the geometry

Zinc die casting can reproduce shaped features in a reusable die and may integrate details that would otherwise require separate fabrication. Its suitability depends on wall arrangement, extraction, operating conditions and expected demand. Some products are better served by another material or process.

Gairun's metalwork route also includes tooling engraving, surface preparation, plating effects, color application and assembly. The exact sequence is defined for the product. A decorative casting and a functional component can require very different secondary operations and checks.

Finishing should be considered before tooling is complete. Polishing can change edges, and coatings can affect fit or electrical contact. The manufacturing overview and surface finishing guidance explain how to connect these decisions.

QUALITY & ACCEPTANCE

Define the evidence.
Align the expectations.

Explore quality requirements ↗

Quality requirements belong in the quotation

Define quality through the drawing, appearance reference and agreed acceptance criteria. Dimensions, attachment security, surface appearance and external testing answer different questions. An inspection statement is most useful when it identifies the actual characteristics and methods involved.

Gairun can coordinate third-party testing for custom products according to the applicable requirements, target market and agreed scope. This service does not imply that every product already holds a certification or that one report covers every regulation. Test construction, methods and reporting need to be selected for the project.

The quality page explains the difference between inspection records, material documents, laboratory reports and certification. Include the required evidence in the initial enquiry so it can be considered alongside manufacturing cost and timing.

PROJECT RESOURCES

Follow the project beyond the first enquiry

Review sampling and production approval when the next decision depends on physical evidence. For the full order sequence, the custom manufacturing process connects enquiry, tooling, sample findings and shipment release. Buyers qualifying the production route can also use the factory workflow review to prepare relevant questions.

START WITH THE RIGHT INFORMATION

Prepare a useful manufacturing enquiry

Send a drawing, model or artwork with the product purpose, dimensions and quantity. Add material and finish preferences, mating components, packaging and the destination. For functional parts, include the operating conditions and critical characteristics. For decorative work, include color references, attachments and variant details.

State the required schedule precisely, including whether the date refers to dispatch or arrival. Identify any sample or testing approvals that must happen first. The sourcing guide can help organize this information and compare quotations on the same basis.

Contact Gairun with your project files to begin a manufacturing review grounded in the product, its acceptance requirements and the proposed scope of supply.

Custom Zinc Die Casting Manufacturer for Your Project

A manufacturing partner.
A clearly defined project.