Introduction
DMAC Precision Technology Co., Ltd. (Chinese: 深圳德科精密科技有限公司) is a Shenzhen-based Chinese engineering company specializing in metal additive manufacturing for molds and tooling. Its activities connect metal laser-based 3D printing with injection-mold design, mold-component production, repair, and precision post-processing. The company is headquartered in Bao’an District, Shenzhen, Guangdong, and was established in 2015.
DMAC operates within the plastics-processing supply chain rather than as a polymer producer or injection-molding machine manufacturer. Its principal contribution is the manufacture of complex metal tooling components, particularly inserts incorporating conformal cooling and specialized venting geometries. These technologies are intended to address persistent molding challenges such as uneven heat removal, extended cycle times, air entrapment, dimensional variation, and difficult mold maintenance.
The company’s published product and exhibition information identifies applications including main inserts, sub-inserts, venting inserts, sprue bushings, hot-tip bushings, core pins, lifters, and mold repair. Exhibition material has also described a production base containing 25 metal additive-manufacturing machines, positioning DMAC as a substantial specialized supplier within the tooling-additive-manufacturing segment.
History and Development
DMAC was incorporated in Shenzhen in 2015, according to Chinese company-registration information. Shenzhen provides access to a dense manufacturing ecosystem encompassing moldmaking, electronics, automotive components, consumer products, precision machining, and plastics processing.
Key development milestones include:
- 2015: Establishment of Shenzhen Deke Precision Technology Co., Ltd., the Chinese legal entity associated with DMAC Precision Technology.
- By 2023: Expansion of its metal additive-manufacturing capacity to 25 machines, according to company exhibition materials presented through INTERMOLD.
- By the mid-2020s: Development of a business model combining metal 3D printing services for tooling with mold-component supply, repair, and associated precision-manufacturing capabilities.
The company has also been identified as an EOS Tooling Additive Manufacturing Center of Excellence and an EOS Authorized Equipment Sales Partner, indicating involvement not only in contract production but also in the promotion or supply of EOS additive-manufacturing equipment.
Business Operations and Segments
DMAC’s activities are concentrated in tooling-related additive manufacturing. Its operating model combines design interpretation, metal powder-bed production, finishing, inspection, and application-specific integration into injection molds.
Principal activity areas include:
- Metal additive manufacturing for injection-molding tools
- Production of conformal-cooling inserts
- Manufacture of venting components and specialized mold inserts
- Manufacture of sprue and hot-runner-related components
- Production of core pins and lifters
- Mold repair and refurbishment
- Precision machining and finishing associated with printed tooling components
- Additive-manufacturing equipment sales or related technical support
The company therefore occupies an intermediary position between additive-manufacturing equipment suppliers, toolmakers, mold designers, injection molders, and end-product manufacturers. Its services are most relevant where conventional subtractive or drilled-channel tooling cannot provide adequate cooling-channel geometry or where rapid repair can extend the useful life of an existing mold.
Products and Technologies
Metal additive-manufactured tooling
DMAC’s core offering is the production of metal mold components through industrial metal 3D printing. The company’s stated applications include:
| Product or component | Typical tooling function |
|---|---|
| Main inserts | Form major sections of the molded part and may incorporate internal cooling or venting |
| Sub-inserts | Provide localized geometry, replaceable details, or difficult-to-machine features |
| Venting inserts | Facilitate the removal of trapped air and molding gases |
| Sprue bushings | Guide molten polymer from the injection nozzle into the mold |
| Hot-tip bushings | Support hot-runner or hot-tip injection arrangements |
| Core pins | Form internal holes, bosses, or other negative features |
| Lifters | Produce undercuts and assist part release |
| Mold-repair components | Restore worn, damaged, or modified tooling areas |
These component categories are particularly relevant to thermoplastic injection molding, where tooling performance directly affects filling behavior, cooling time, surface quality, dimensional stability, and production yield.
Conformal cooling
Conformal cooling is a central application of metal additive manufacturing in moldmaking. Unlike conventional straight-drilled cooling channels, conformal channels can follow the contours of a cavity or core more closely. This arrangement can improve heat-transfer uniformity in geometrically complex regions and reduce localized overheating.
The potential manufacturing benefits include:
- More uniform mold-temperature control
- Reduction of hot spots and thermal distortion
- Shorter cooling stages in suitable applications
- Improved dimensional consistency
- Greater design freedom in compact or intricate tooling areas
Actual performance depends on channel design, alloy selection, wall thickness, powder-bed process parameters, coolant flow, mold geometry, and the quality of finishing and validation. Conformal cooling is therefore an engineering solution requiring thermal simulation and application-specific design rather than a universal replacement for conventional channels.
Venting and complex internal structures
Additive manufacturing allows designers to produce internal passages, lattice-like structures, and localized venting features that can be difficult or impossible to create through conventional drilling and milling. In injection molds, these features may assist the evacuation of air and gases from deep or intricate cavity regions.
Effective venting can help reduce defects such as burns, incomplete filling, weld-line weakness, and surface blemishes. The design must nevertheless account for permeability, cleaning, wear, polymer contamination, and the need to prevent flash.
Post-processing and precision finishing
Printed mold components generally require finishing operations before entering production. These may include support removal, heat treatment, surface machining, grinding, polishing, dimensional inspection, and integration with conventionally manufactured mold bases or components.
The combination of additive and subtractive processes is important because additive manufacturing provides geometric freedom, while machining and polishing establish the dimensional accuracy, surface condition, sealing interfaces, and fit required for production tooling.
Applications and End Markets
DMAC serves industries that rely on high-performance injection molds and short or medium production cycles. Identified application areas include:
- Automotive components
- Consumer electronics and electrical products
- Household appliances
- Medical and healthcare-related plastic parts
- Industrial plastic components
- Consumer goods and packaging-related tooling
- Prototype and low-volume production
The company’s tooling focus is especially relevant to parts with complex geometries, demanding appearance requirements, localized heat concentrations, difficult venting conditions, or high production volumes where cycle-time improvements can have substantial economic value.
For molders, the business case for additive-manufactured inserts generally depends on the balance between higher tooling-component cost and potential gains in cycle time, yield, maintenance, and product quality. The value proposition is strongest where conventional cooling layouts create persistent thermal limitations or where a replaceable insert can reduce repair and modification time.
Global Presence and Market Position
DMAC is based in Shenzhen and has participated in international plastics and mold-industry exhibitions, including CHINAPLAS and INTERMOLD-related events. Its participation places the company within a regional and international network of moldmakers, injection molders, equipment manufacturers, and engineering-service providers.
The company’s market position is defined by specialization rather than by broad plastics-industry integration. It does not appear to compete across the full range of polymer production, plastics machinery, or general-purpose moldmaking. Instead, it focuses on the technically specialized intersection of:
- Metal additive manufacturing
- Injection-mold tooling
- Conformal cooling
- Mold repair
- Precision mold-component production
Its stated EOS-related role further connects the company with the industrial metal-additive-manufacturing equipment ecosystem. Competition in this field includes conventional mold-component manufacturers, specialist additive-manufacturing service bureaus, integrated toolmakers, and equipment manufacturers offering application-development support.
Research and Development
DMAC’s technology focus reflects several important research and development directions in modern tooling:
- Optimization of conformal cooling-channel layouts
- Thermal simulation of inserts and molds
- Design for additive manufacturing
- Integration of printed components with conventional tool structures
- Development of printable venting geometries
- Improvement of dimensional accuracy and surface finish
- Process control for repeatable metal-powder-bed production
- Repair strategies for extending mold service life
Research in this area typically combines computer-aided engineering, powder-bed process development, metallurgy, machining, and injection-molding validation. The practical challenge is not only to print a geometrically complex insert, but also to ensure that the completed component performs consistently under repeated thermal cycling, pressure, abrasion, and contact with polymer melts.
Sustainability and Environmental Considerations
Metal additive manufacturing can support resource efficiency in tooling by enabling localized repair, reducing the need to replace complete mold components, and producing geometries that may improve injection-cycle efficiency. Conformal cooling can potentially reduce the energy consumed per molded part when it shortens cooling time or improves process stability.
The environmental profile of additive manufacturing is not automatically lower than that of conventional production. Relevant factors include:
- Electricity consumption of metal-printing equipment
- Production and handling of metal powders
- Inert-gas use
- Powder recovery and recycling practices
- Heat treatment and machining requirements
- Material utilization and support removal
- Service-life improvements achieved in the finished mold
A balanced assessment therefore requires consideration of the entire tooling life cycle. The strongest sustainability case generally arises when additive-manufactured inserts reduce scrap, extend mold life, lower energy use during molding, or eliminate repeated replacement of large conventional components.
Quality Management and Technical Control
Quality in metal additive-manufactured tooling depends on coordinated control of design, printing, post-processing, and final inspection. Relevant controls may include:
- Powder identification and handling
- Build-parameter management
- Layer-by-layer process monitoring
- Heat-treatment control
- Dimensional inspection
- Surface-finish verification
- Internal-channel inspection
- Leak testing for cooling passages
- Metallurgical and mechanical evaluation
- Final fitting and mold-trial validation
The performance of a printed insert must be assessed in the context of its intended molding application. Dimensional conformity alone does not establish suitability: cooling-channel integrity, fatigue resistance, wear behavior, polishability, corrosion resistance, and compatibility with the mold base are also significant.
Innovations and Future Outlook
DMAC’s future development is closely associated with the broader adoption of additive manufacturing in injection tooling. Several trends are likely to influence the company and its market:
- Greater use of simulation-driven conformal cooling
- Wider integration of additive and conventional manufacturing
- Increased demand for rapid mold repair and modification
- Growth of localized production for complex tooling components
- More extensive use of process monitoring and digital traceability
- Development of improved tool steels and corrosion-resistant alloys for additive production
- Expansion of application engineering for automotive, electronics, medical, and consumer products
The principal strategic challenge is demonstrating measurable production value to molders. Customers increasingly evaluate tooling technologies through total cost of ownership, including cycle time, scrap, maintenance, service life, and qualification requirements. Additive-manufacturing suppliers must therefore combine printing capacity with design expertise, machining, metrology, mold-trial capability, and reliable delivery.
DMAC’s specialization in mold inserts and related components gives it a focused position within this transition. Its long-term competitiveness will depend on the repeatability of printed tooling, the engineering quality of its conformal-cooling solutions, the integration of post-processing capabilities, and its ability to convert additive design freedom into verified improvements in injection-molding performance.
Summary
DMAC Precision Technology Co., Ltd. is a Shenzhen-based specialist in metal additive manufacturing for injection molds and tooling. Established in 2015, the company supplies conformal-cooling inserts, venting inserts, sprue and hot-tip bushings, core pins, lifters, and mold-repair components. Its reported fleet of 25 metal additive-manufacturing machines and its association with EOS-related tooling activities reflect a production and technology model centered on industrial metal 3D printing.
The company’s significance lies in applying additive manufacturing to practical tooling problems rather than in producing polymers or conventional plastics machinery. By combining complex internal-channel design with machining, finishing, and mold integration, DMAC participates in the industry’s movement toward shorter development cycles, more efficient thermal management, localized repair, and increasingly digital production of injection-molding tools.
References
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CPS+ eMarketplace. (n.d.). DMAC PRECISION TECHNOLOGY CO., LTDDMAC PRECISION TECHNOLOGY CO., LTD. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1037003Link