Ningbo Dinghong Mould Co., Ltd. was established in 2013. （Yuejin Mould was established in 1998）It covers an 20 mu and located at No. 6 Yantanghe Road in the high-end mold park of Daqi Street, Beilun District, Ningbo City, Zhejiang Province, near the Beilun Port, the first largest port in China, with highly developed transportation which bring us much convenience.
As China Die Casting Electrical Parts Manufacturers and Die Casting Electrical Parts Suppliers, the company is integrated with mold design, manufacturing, die-casting, finishing production and trade, mainly producing auto parts, household appliance parts, telecommunication parts and other related aluminum alloy products. The company has been serving the automobile industry and famous OEMs, with strong technical force and advanced standardized system management to ensure the quality of each mold and die casting product.
In 2017, the company passed (ISO9001 and IATF16949) quality management system certification, with perfect testing equipment and sound quality control system. The marketing network covers China, South America, Southeast Asia and other countries, and we will develop EU and other markets one after another to increase the company's sales revenue.
The company has its own design team and advanced software, hardware equipment and systems. The company has realized the prior visualization analysis of mold design through mold flow analysis software. We make full use of our own technical strength, combined with the analysis of industry experience, quickly to provide customers with reliable mold design solutions.
Ningbo Dinghong Mould Co., Ltd. (Yuejin Mould, founded in 1998) leverages over two decades of mold manufacturing experience to establish a full-chain technical process system covering mold design, die casting, precision finishing, and quality inspection. With "visual analysis + systematic management and control" at its core, the company ensures the efficient and reliable delivery of every mold and every aluminum alloy product.
Information from Marketing Dept.
Technical Negotiation
Summary of Negotiation
Client's Confirmation
Preliminary Design
Client's Confirmation
Offer from MarketingDept.
Project Launch
Establishment of Project Team
Mould Flow Analysis
Modification of Design Proposal
Structural Design
Review and Approval of Design
Client's Confirmation
Materials Procurement
Parts Design
2D Drawings
3D Modelling
Review and Approval by R&D Dept. Manager
Issuing & Controlled
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READ MORENingbo Dinghong Mould Co., Ltd. is a Die Casting Electrical Parts Manufacturer working from Beilun, Ningbo, with tooling roots going back to Yuejin Mould in 1998. We design the mould, cast the aluminium, machine and finish the part, and ship it from a facility next to Beilun Port.
This range covers the aluminium components that sit inside and around electrical and electronic equipment: housings, covers, trays, handles, brackets and heat-dissipating bodies. Parts are produced to drawing, with the tooling, machining and inspection handled under one roof.
Electrical die casting is a fit-driven family rather than a single part. The common thread is a thin-to-medium wall aluminium body that must hold a PCB, a heating element, a connector interface or a cable entry while managing heat, weight and dimensional consistency.
Flat, ribbed aluminium trays used in ovens and baking appliances. Wall thickness, flatness and food-contact surface finish drive the tooling design.
Handles and filter bodies for espresso and filter machines, where thread accuracy, sealing faces and a clean exterior surface matter as much as strength.
Enclosures and mounting bodies for controllers, inverters, inductance boxes and similar electrical assemblies, cast with bosses, ribs and machined interfaces.
Electrical castings usually sit at the boundary between a power or signal function and the outside environment. That shapes the specification more than the part's size does.
Where a part is primarily load-bearing rather than electrical, it usually belongs in Die Casting Structural Parts. Where it is a motor, reducer or controller housing for a new energy drivetrain, Die Casting New Energy Vehicle Three-Electric Parts is the closer match.
Most electrical parts we cast are aluminium alloy, chosen for the balance of weight, thermal conductivity and castability. The alloy grade, temper and any post-casting treatment are agreed against the drawing and the working environment before tooling starts.
| Specification Area | What We Confirm With You | Why It Matters |
|---|---|---|
| Alloy and temper | Grade, thermal conductivity target, as-cast or heat-treated condition | Drives strength, heat dissipation and machining behaviour |
| Wall thickness and ribs | Nominal wall, rib layout, draft and corner radii | Controls fill, porosity risk and cycle time |
| Machined interfaces | Bearing seats, sealing faces, threads, connector cut-outs | Determines fit with mating electrical components |
| Surface and sealing | As-cast, blasted, painted, anodised or machined finish; gasket faces | Affects ingress protection and appearance |
| Inspection level | Critical dimensions, CMM reports, X-ray or spectrometer checks | Defines the acceptance evidence for each batch |
We build the mould ourselves. Our design team uses CAD/CAE/CAM software and mould flow analysis to simulate filling, cooling and stress distribution before cutting steel, so the fill pattern and gate position are reviewed on screen rather than on the machine.
Production runs on high-precision CNC machining centres, large-scale EDM equipment, full-tonnage die-casting machines and automated trimming lines. That combination lets us hold machined features on cast bodies without moving the part between suppliers.
Dinghong Mould has held ISO 9001 and IATF 16949 certification since 2017. Our quality system covers incoming material, in-process and outgoing inspection, with data recorded for each batch.
Acceptance criteria are agreed at the quotation stage, so the inspection report you receive matches the drawing you issued. Where a part carries a safety or sealing function, we discuss the sampling plan and any third-party inspection requirement before production.
A workable proposal needs the working point, not just a shape. The following inputs let us select the machine, the tooling concept and the finishing route.
We handle the chain from part design through tool development, tool building and parts production. A project team is assigned at launch, and design changes are confirmed with you before release.
Our marketing network covers China, South America and Southeast Asia, with the European market under active development. Shipments move through Beilun Port, which keeps export logistics straightforward for overseas projects.
Related ranges include Die Casting Telecommunication Equipment Parts and Die Casting Photovoltaic, Energy Storage and Charging Parts, both of which share tooling and inspection practice with this family.
Yes. We work from a 3D model plus a 2D drawing that carries tolerances and datum information. If the drawing is not finalised, our design team reviews the model and returns a proposal covering parting line, gate position, draft and machined features before tooling is released.
Mould flow analysis is used during design to check fill and cooling behaviour, and gate and overflow positions are set accordingly. During production, X-ray flaw detection is available on critical sections, and process parameters are recorded so a proven setting can be repeated.
As-cast, blasted, painted, anodised and fully machined finishes are all used in this range. The choice is agreed against the appearance requirement, the sealing interface and any electrical insulation need, and is written into the inspection plan.
We can. Some customers take the tool and run production elsewhere; others have us cast, machine and finish the parts. Both routes are supported from the same design and manufacturing process, and the mould is inspected before delivery either way.
Batch inspection records are kept for incoming material, in-process checks and outgoing inspection, including CMM dimensional results and spectrometer alloy confirmation where applicable. The specific report package is agreed with you at the quotation stage.
Send the drawing, target volume and application details. We review the part, confirm the alloy and process route, and return a tooling and production proposal. Once the design is approved, the project team is assigned and the mould enters manufacturing.
Sun Yuejun: +86-13806631860
Wang Shiyong: +86-15958891460 / 15058297768
Dove Yao: +86-18625086675
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