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 New Energy Parts Manufacturers and Die Casting New Energy 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
One large aluminum die casting can now replace what used to be 70 to 130 separately stamped and welded steel parts in an electric vehicle's underbody. That single fact is why die casting new energy parts has become the dominant manufacturing approach for stru...
READ MOREDie casting is a manufacturing process that forces molten metal under high pressure into a reusable steel mold to produce precise metal parts at scale. A single die casting mold typically produces between 100,000 and 1,000,000 parts before major refurbishme...
READ MOREMaterials & Manufacturing Yes, Aluminum Die Casting Parts are consistently lighter than Cast Iron Parts when engineered to carry the same load capacity. Depending on geometry and wall thickness, a component produced through aluminum die casting can weigh...
READ MORENingbo Dinghong Mould Co., Ltd. is a China-based Die Casting New Energy Parts Manufacturer producing aluminum alloy housings, covers and structural components for new energy vehicles, energy storage and charging equipment. Our work covers mold design, die casting, precision finishing and inspection under one roof.
The range serves programs where weight, sealing, dimensional stability and batch consistency matter: controller housings, reducer housings, front housings, cylinder heads and related castings. We quote from the working point, material, machining scope and production target rather than from a catalog number.
Our new energy die casting range is built around aluminum alloy parts that carry loads, seal fluids or locate rotating components. Typical parts include motor and controller housings, reducer and gear housings, front covers, cylinder heads and mounting structures. Each part is developed as a mold project first, then transferred to die casting and finishing.
Because we also build the tooling, we control the interface between casting geometry and machining datum. That matters on housings where a bearing bore, a sealing face and a mounting pattern must stay aligned through the full production run.
The categories below are the product families we manufacture. They share the same mold, die casting and finishing chain, but each addresses a different function on the vehicle or equipment.
| Product Family | Typical Parts | Application Fit |
|---|---|---|
| Die Casting New Energy Vehicle Three-Electric Parts | Controller housings, motor housings, reducer housings | Battery, motor and electronic control assemblies requiring sealing and heat paths |
| Die Casting Photovoltaic, Energy Storage And Charging Parts | Inverter housings, energy storage plates, charging enclosures | Outdoor and indoor power conversion equipment with thermal and IP requirements |
| Die Casting Structural Parts | Shock absorber towers, body mounting nodes | Chassis and body structures where stiffness and fatigue life govern design |
| Die Casting Fuel Automotive Parts | Clutch housings, bearing plates, hybrid housings | Conventional and hybrid driveline components sharing the same casting platform |
Parts we have produced in this family include the AHC065-8215 & 8111 housing, the F01R402N7501 reducer housing, a Volkswagen front housing, the D08 housing and the HT30 two-wheel drive controller housing. These are reference points for geometry, wall thickness and sealing strategy, not fixed catalog items.
New energy housings are usually specified in aluminum alloy selected for castability, strength and thermal conductivity. The alloy choice interacts with wall thickness, rib layout and the machining allowance left on sealing faces and bearing bores.
Specifications are confirmed per part, but the following variables drive most new energy die casting projects. We review them during technical negotiation and lock them into the quality plan before tooling starts.
| Specification Area | What We Confirm |
|---|---|
| Dimensional accuracy | Datum scheme, critical dimensions, GD&T callouts and inspection method |
| Internal quality | Porosity acceptance level, X-ray or sectioning requirement, leak test pressure |
| Surface and finish | As-cast condition, machining finish, coating or passivation scope |
| Capacity and throughput | Annual volume, batch size, mold cavitation and machine tonnage |
| Traceability | Batch identification, material certificates and inspection records |
Our design team uses CAD/CAE/CAM software and mold flow analysis to visualize filling, cooling and stress distribution before a mold is cut. This early simulation lets us adjust gate position, runner design and cooling layout while changes are still inexpensive.
The technical process runs from marketing information and technical negotiation through preliminary design, mold flow analysis, structural design review, 2D drawings and 3D modeling, then into manufacturing. Each stage carries a client confirmation point, so the design that reaches the machine shop is the design the customer approved.
Our facility is equipped with high-precision CNC machining centers, large-scale EDM equipment, full-tonnage die-casting machines and automated trimming lines. The manufacturing route covers six-face machining, hole machining, NC rough and fine machining, heat treatment, wire cutting, EDM, polishing, assembly and storage, with CMM checks at the machining stages.
Quality control follows a documented plan: incoming material inspection with metallographic analysis, in-process checks on standard and outsourced components, assembly check, mold trial with wall thickness and full dimension verification, and a final check before delivery. Inspection equipment includes CMM, X-ray flaw detection and spectrometry, with data recorded per batch. We have held ISO 9001 and IATF 16949 certification since 2017.
To prepare a mold and die casting proposal for a new energy part, we work from the following inputs. Where a drawing is not final, we can start from a 3D model and the functional requirements.
We provide service from part design and tool development through tool building and parts production. Project teams handle technical negotiation, design confirmation and production follow-up, with remote technical support and digital data sharing for overseas customers. For major projects, on-site engineering support can be arranged.
Delivery documentation typically includes inspection reports, material records and mold trial samples. Our location near Beilun Port supports efficient export logistics to customers in China, South America, Southeast Asia and the EU. Spare parts, wear components and maintenance guidance are handled through the same project contact.
We produce aluminum alloy housings, covers and structural parts for new energy applications, including controller housings, reducer housings, front housings, cylinder heads and energy storage or charging enclosures. Parts are developed as custom projects from a drawing or 3D model.
Yes. Mold design, mold manufacturing, die casting, precision finishing and inspection are integrated in our facility. This lets us control the relationship between casting geometry and machining datum from the first trial.
We define porosity acceptance levels during technical negotiation, use mold flow analysis to reduce shrinkage risk, and verify internal quality with X-ray flaw detection or sectioning where the application requires it. Leak test criteria are agreed per part.
Ningbo Dinghong Mould Co., Ltd. has held ISO 9001 and IATF 16949 quality management system certification since 2017, supported by incoming, in-process and outgoing inspection with recorded data.
Send the 3D model and 2D drawing, material grade, annual volume, machining scope, sealing or leak test requirements and delivery destination. With those inputs we can confirm the mold concept, casting route and finishing scope.
Sun Yuejun: +86-13806631860
Wang Shiyong: +86-15958891460 / 15058297768
Dove Yao: +86-18625086675
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