This guide highlights seven manufacturers in China, comparing their zinc die casting services and supporting capabilities to help you shortlist suppliers for your next project.
How We Selected These Zinc Die Casting Manufacturers
The manufacturers in this guide were selected based on publicly available information about their zinc die casting services, manufacturing capabilities, and supporting processes. We looked for companies that explicitly offer zinc alloy die casting and provide relevant information about capabilities such as tooling, secondary machining, surface finishing, or quality inspection.
The selection also considers whether buyers can find enough company and service information to assess a potential supplier before making contact. The companies are not presented as an independently audited ranking, and their order does not necessarily indicate that one manufacturer is better than another. Buyers should confirm current production capabilities, tooling arrangements, quality requirements, and project suitability directly with each supplier.
Zinc Die Casting Manufacturers at a Glance
The table below compares seven manufacturers in China by location and available zinc die casting capabilities, including tooling, secondary machining, and surface finishing.
| Company | Location | Zinc Die Casting Capabilities |
|---|---|---|
| ZH Precision | Dongguan | Custom zinc die casting, DFM support, mold manufacturing, secondary CNC machining, surface finishing, and dimensional inspection. |
| Sunrise Metal | Kunshan | Small and miniature zinc die casting, supported by tooling, CNC machining, and surface finishing. |
| Junying | Dongguan | Custom zinc die casting, mold design and manufacturing, CNC machining, polishing, and plating. |
| Minghe | Dongguan | Custom zinc alloy casting, tooling, CNC milling and turning, deburring, and surface finishing. |
| Neway Precision | Dongguan | Zinc and Zamak die casting, multiple alloy options, and surface finishing, including plating, painting, and powder coating. |
| Huayinsheng | Huizhou | Zinc die casting, mold manufacturing, secondary machining, polishing, electroplating, and quality inspection. |
| RapidDirect | Shenzhen | Zinc die casting, mold design, DFM analysis, secondary CNC machining, surface finishing, and inspection. |
1. ZH Precision
Based in Dongguan, China, ZH Precision manufactures custom zinc die cast parts for OEM applications, including housings, covers, brackets, connectors, and other metal parts made to customer drawings.
The factory operates zinc die casting machines ranging from 88 to 138 tons. Production can include mold design and manufacturing, hot-chamber die casting, secondary CNC machining, and surface finishing. Zamak 3, Zamak 5, and Zamak 7 are available for different part requirements. For features that need tighter dimensional control than casting alone can provide, secondary machining can be used to finish critical holes, threads, and mating surfaces.
Dimensional inspection and material documentation are available to support production approval and repeat orders. ZH Precision holds ISO 9001:2015 and IATF 16949:2016 certifications.
Key Capabilities: Zinc die casting, DFM review, mold manufacturing, secondary CNC machining, surface finishing, and dimensional inspection.
Website: ZH Precision
2. Sunrise Metal
Sunrise Metal is based in Kunshan, Jiangsu, and offers both aluminum and zinc die casting. While aluminum casting is a major part of its business, the company also produces zinc parts using hot-chamber die casting.
Its published capabilities include 60–250 ton machines and zinc alloys such as Zamak 3 and Zamak 5. CNC machining and surface finishing are also available for parts that require additional processing after casting, making Sunrise Metal an option for projects that need both casting and secondary operations.
Key Capabilities: Small and miniature zinc die casting, mold manufacturing, DFM support, secondary CNC machining, and surface finishing.
Website: Sunrise Metal
3. Junying
Junying offers custom zinc die casting, mold making, and CNC machining for parts made to customer specifications. Its services also include post-casting operations such as deburring, polishing, and surface finishing.
By combining tooling and secondary machining services, Junying can support projects that require custom molds and additional work after casting. Specific alloy options and finishing requirements depend on the part design and project specifications.
Key Capabilities: Zinc die casting, mold design and manufacturing, precision CNC machining, polishing, and electroplating.
Website: Junying
4. Minghe
Minghe is a die casting manufacturer based in Dongguan, China, offering custom zinc alloy parts, mold manufacturing, CNC machining, and surface finishing. Its zinc casting capabilities cover Zamak grades and ZA-series alloys, with CNC milling, turning, and drilling available for features that require additional machining after casting.
The company operates hot-chamber die casting equipment ranging from 30 to 200 tons. Post-casting operations include trimming, deburring, polishing, blasting, painting, and powder coating. Inspection, assembly, and packaging are also available.
Key Capabilities: Zinc alloy die casting, mold manufacturing, CNC machining, deburring, surface finishing, and assembly.
Website: Minghe
5. Neway Precision
Neway Precision works with several zinc alloys, including Zamak 2, Zamak 3, Zamak 5, Zamak 7, and ZA-8. These materials serve different requirements for strength, hardness, and casting performance, depending on the part design.
Beyond casting, Neway provides mold making, CNC machining, and surface finishing. These processes are relevant for zinc parts that need machined holes, accurate mating surfaces, or a specific surface appearance after casting.
Key Capabilities: Zinc alloy selection, die casting, mold making, CNC machining, and surface finishing.
Website: Neway Precision
6. Huayinsheng
Huayinsheng manufactures custom zinc alloy die cast parts at its facility in Huizhou, China. Its product range includes small metal parts such as perfume caps, razor housings, locks, watch cases, and luggage hardware, where appearance and surface finish can be important alongside dimensional requirements.
In addition to die casting and tooling, the company offers CNC machining and surface finishing. Depending on the part and its intended use, finishing options may include polishing, plating, and other treatments. Salt spray testing is also available for certain products where corrosion resistance needs to be evaluated.
Key Capabilities: Zinc alloy die casting, tooling, CNC machining, surface finishing, and salt spray testing.
Website: Huayinsheng
7. RapidDirect
RapidDirect provides custom zinc die casting services in China, with listed material options including Zamak 2, Zamak 3, and Zamak 5. Its service scope covers tooling development, casting, secondary CNC machining, surface finishing, and inspection for components such as connector housings, locks, and hardware parts.
The company combines internal manufacturing facilities with a network of casting suppliers to coordinate production. Engineering services include DFM analysis and mold design support, while dimensional inspection resources include CMMs, optical measurement equipment, and gauges. This combination supports projects requiring casting, machined features, and finishing under coordinated project management.
Key Capabilities: Zinc die casting, tooling development, DFM support, secondary CNC machining, surface finishing, and inspection.
Website: RapidDirect
How to Choose a Zinc Die Casting Manufacturer in China
A supplier’s equipment list is only one part of the evaluation. Before placing an order, check whether its tooling, casting, machining, and finishing capabilities match your component requirements. Comparable quotations should cover the same alloy, drawing revision, batch quantity, inspection scope, and delivery conditions.
Review Similar Zinc Parts
Ask for examples with comparable geometry and finishing requirements. A supplier experienced in plated connector housings may approach tooling and surface preparation differently from one producing decorative handles. Relevant samples and inspection reports provide more useful evidence than general claims about precision.
Confirm Tooling and Production Arrangements
Clarify where the mold will be manufactured, where casting will take place, and which secondary operations are handled externally. Confirm mold ownership, maintenance responsibilities, sample approval, and how tooling changes will be managed. These details remain important whether you work directly with a factory or through a manufacturing network.
At Zhonghui Precision (ZH Precision), our mold manufacturing services cover mold design, machining, assembly, and casting trials. When modifications are required, our team reviews the affected features, machining work, and validation needs, then confirms the proposed changes, costs, and schedule with you before proceeding.
Define Quality and Finishing Requirements
Identify critical dimensions, mating surfaces, threads, and visible areas before requesting quotations. For plated or painted parts, specify coating thickness, masking, appearance standards, and any required corrosion testing. Agree on measurement methods and inspection reports so acceptance requirements are clear before production.
Compare the Complete Cost
Review tooling charges, unit prices, secondary machining, finishing, inspection, packaging, and freight together. Confirm whether the quoted schedule includes mold development, trials, sample approval, and production. A lower casting price may offer little saving if essential operations are charged separately.
What to Include in Your Zinc Die Casting RFQ
A complete RFQ helps manufacturers assess tooling, production, and inspection requirements on the same basis. Send a 3D CAD model and a dimensioned 2D drawing with matching revision numbers. Specify the zinc alloy, initial order quantity, expected annual demand, and required delivery date. If the alloy is undecided, describe the part’s function and operating environment so the supplier can recommend options.
Identify critical tolerances, threads, mating surfaces, and cosmetic areas. Include finishing specifications, inspection reports, material certificates, and any testing or packaging requirements. Ask suppliers to state tooling costs, sample lead times, production lead times, and exclusions separately, making their quotations easier to compare.
FAQ
The best fit depends on your part geometry, alloy, order volume, finishing, and inspection requirements. Shortlist suppliers with relevant zinc component experience, then compare samples, technical feedback, and complete quotations.
Often, yes, but the receiving manufacturer must assess its condition and compatibility with the proposed machine. Mold dimensions, mounting interfaces, shot capacity, ejection, and cooling connections may require adjustments before trials.
Ownership should be stated in the purchase agreement. Paying a tooling charge does not automatically establish transfer rights, so confirm ownership, storage, maintenance responsibilities, and release conditions before ordering.
Yes. Agree on sample quantities, dimensional reports, and any functional or finishing tests before tooling trials. Production should proceed after sample approval, with any accepted deviations documented.
Many suppliers accept NDAs, but confirm this before sharing confidential files. The agreement should cover the information disclosed and any subcontractors who need access to it.
