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High-Volume Plastic Injection Molding & Turnkey OEM Solutions

Custom Injection Molding Services | Product Assembly | USA-Led Global Sourcing Support

Free DFM Review

Industrial Scale Custom Injection Molding Services

Haumann Group delivers engineering-led high-volume plastic injection molding and custom product assembly for Tier-1 OEMs, global hardware brands, and fast-scaling startups. To completely eliminate supply chain risks, our dual-location contract manufacturing model provides local, high-touch engineering support in Houston, Texas, paired with highly cost-efficient mass production nodes across our robust global factory network.

End-to-End OEM Manufacturing

  • High-volume precision injection molding
  • Automated product assembly at scale
  • Dual-base manufacturing in USA & China
  • German-engineered tooling for consistent quality
Haumann Technology

Haumann is a full-service OEM manufacturing partner supporting custom injection molding services, high-volume plastic parts manufacturing, and integrated assembly for production-focused OEM programs. Our capabilities include in-house tooling and mold fabrication, precision injection molding, CNC machining, secondary operations, and turnkey OEM manufacturing. Together, these services enable reliable, repeatable, and scalable production for global brands.

End-to-End High-Volume Plastic Injection Molding Capabilities

Our manufacturing capability platform is built around integrated, production-ready processes that function as a single OEM system rather than disconnected services. This approach allows our engineering team to manage tight-tolerance custom injection molding services, high-output plastic component production, and turnkey assembly. and turnkey OEM programs with consistent quality and long-term reliability.

By combining in-house tooling, precision injection molding, CNC machining, and integrated assembly, we help OEM partners reduce supply-chain risk and move confidently from validated production to sustained mass manufacturing.

Core Manufacturing Capabilities

The following manufacturing capabilities are commonly applied across high-volume OEM production programs and scalable manufacturing partnerships:

Custom Injection Molded Components

We provide high-volume injection molding for plastic parts manufacturing, supporting structural housings, functional components, and tight-tolerance parts. Our injection molding processes are engineered for repeatability, dimensional stability, and long-term production consistency.

→ Injection Molded Components

High-Volume Plastic Injection Molding Parts

Our mass production plastic parts manufacturing is optimized for cycle-time efficiency, multi-cavity tooling, and consistent output. This capability supports OEMs that require reliable, high-volume production across domestic and global markets.

→ Mass Production Plastic Parts

Precision Tool and Mold Fabrication

In-house mold design, tooling engineering, and mold fabrication are developed using DFM-driven processes. As a result, production risk is reduced while stable, repeatable injection molding performance is achieved from pilot builds through full production.

→Tooling Engineering & Mold Fabrication

CNC Machining & Precision Processing

Precision CNC machining supports tooling components, molded-part interfaces, fixtures, and secondary machining operations. These capabilities ensure tight tolerances, accurate alignment, and consistent dimensional control throughout production.

→ CNC Machining & Precision Processing

Assembly & Integrated Manufacturing

Our assembly and integrated manufacturing services combine molded, machined, and secondary-processed components into production-ready sub-assemblies and finished OEM products. This integrated approach improves accountability and reduces supplier complexity.

→ Assembly & Integrated Manufacturing

Carbon Composite Components (Selective Applications)

Selective carbon composite manufacturing is used when lightweight performance, structural reinforcement, or material-specific advantages are required as part of an integrated OEM production strategy.

→ Carbon Composite Components

Footwear Injection Molding Components

We support precision injection molding for footwear components, including structural parts, overmolded assemblies, and engineered plastic components. These solutions are designed to meet the durability, fit, and performance requirements of high-performance footwear manufacturing.

→ Footwear Injection Molding Components

Turnkey OEM Manufacturing Solutions and Contract Assemblies

See how our custom manufacturing services empower brands to seamlessly scale from prototypes to mass production. With advanced injection molding capabilities, CNC machining, and global production facilities in both Houston, USA, and Foshan, China, we provide scalable and reliable solutions to ensure your products are ready for market.

The Haumann Advantage:

  • Repeatable Precision – Injection molding processes engineered for dimensional stability and consistent quality.
  • German-Engineered Tooling – Advanced mold design and process control to protect critical tolerances and part consistency.
  • High-Volume Capacity – Multi-cavity tooling and stabilized cycle times for scalable production.
  • Value-Added Assembly – Optional secondary operations for ready-to-ship OEM components.

End-to-End Manufacturing Capabilities

Automated High-Volume Injection Molding Framework

✅ High-volume precision injection molding
✅ Automated product assembly at scale
✅ Dual-base manufacturing in USA & China
✅ German-engineered tooling for consistent quality
Free DFM rEVIEW
Automotive injection molded plastic component manufactured for OEM high-volume production

Injection Molding &Component Production:

✔️ Precision injection molding

✔️ Scalable mass production

 ✔️ Engineering-grade plastics

In-house mold design and fabrication for optimized production

In-house Tooling &
Mold Engineering:

✔️Mold design & fabrication

✔️Rapid iteration

 ✔️German engineered tooling

Assembly and testing for scalable production of integrated parts

Assembly & IntegratedManufacturing

✔️Product assembly

✔️Functional testing

 ✔️Pack-out ready delivery

CNC Machining for precision parts with tight tolerances

Accurate by Design,Verified by CMM

✔️Precision machining

✔️Complex geometries

 ✔️Fast iteration & scaling

How Our Production Platform Works

At Haumann, we’ve developed a production platform that seamlessly integrates multiple capabilities, allowing us to reduce handoffs, minimize risks, and improve overall accountability. Our approach allows you to go from prototype to full-scale production with confidence.

Key Benefits of Our Integrated Approach:

  1. Early Collaboration: Our engineering team works closely with yours from the beginning, ensuring tools, parts, and assembly processes are perfectly aligned.

  2. Minimized Risk: Through streamlined feedback loops, we refine designs and production methods before moving to the next phase.

  3. Faster Time-to-Market: By ensuring that each phase of the process is in sync, we reduce delays, helping you get your products to market faster.

Why Global Brands Trust Haumann as Their Plastic Injection Molding Company

We combine the best of both worlds by offering localized support in the USA and cost-efficient mass production in China. Our dual-base manufacturing model offers the perfect blend of high-quality products and scalable production.

    • Multi-Process Manufacturing: We integrate multiple manufacturing processes under one roof to optimize efficiency and reliability.

    • Engineering-Led Production: From design to production, our engineering team provides unmatched expertise in every step.

    • Dual-Base Support: Combining our local Conroe, Houston head facility with an interconnected global factory blueprint to lower tooling costs.

Typical OEM Programs We Support

We work with leading brands across various industries, providing reliable solutions for product development and mass production.

  • Performance Footwear & Related Components: From initial design to market launch, we support high-performance footwear products.

  • Sports and Outdoor Products: Reliable and durable components for outdoor and sporting goods manufacturers.

  • Industrial & Mechanical Assemblies: Helping manufacturers transition from prototypes to full-scale production.

  • New Product Development & Production Ramp-Up Programs: Offering the expertise and resources you need to scale your product quickly and efficiently.

How It Works

We believe that clarity at every stage of production is essential. Here’s a breakdown of our process:

  1. Concept Review & Manufacturing Feasibility: We analyze the product concept and ensure it’s feasible for mass production.

  2. DFM & Tooling Strategy Alignment: We ensure that your design is optimized for manufacturability, cost-effectiveness, and functionality.

  3. Prototyping, Validation, and Production: After building prototypes, we work with you to ensure each component meets the necessary standards before scaling to full production.

  4. Production Ramp-Up: Once the product is validated, we handle the scaling process to ensure a smooth transition into full production.

Looking for an Integrated OEM Manufacturing Partner?

tart with a DFM review to help reduce risk and ensure your program is aligned for stable production.

Fast Quote

High-Volume Plastic Injection Molding Capabilities: Frequently Asked Questions

Haumann Group is a premier corporate entity among plastic injection molding manufacturers specializing in high volume plastic component fabrication. Operating out of our engineering head office at Conroe, Houston, Texas, we specialize in managing multi-cavity hardened steel tool systems, automated cycle time reduction, and complex thermoplastic resin processing for commercial OEM frameworks.
Yes. We eliminate tooling risks by managing a scalable workflow under one roof. Our plastic prototype manufacturing services utilize fast aluminum bridge molds for short-run test batches (500 to 1,000+ units), seamlessly transitioning production into fully automated heavy-duty steel molding lines capable of producing millions of consistent parts.
Beyond processing plastic, we provide complete, ready-to-ship turnkey OEM manufacturing solutions. Our automated production lines execute precision thermal plastic heat staking, specialized ultrasonic resistance welding for electronics housings, custom insert overmolding, precision post-mold CNC machining, and automated coordinate measuring machine (CMM) quality validation loops.
Our engineering desk operates under strict scientific injection molding discipline to achieve tight B2B dimensional limits. For standard engineering resins molded in our Houston, Texas facility, we regularly maintain commercial tolerances of ±0.005 inches, and high-precision tight tolerances down to ±0.001 inches on critical features like automotive connectors and electronics enclosure guide pins.
While initial tool building requires an upfront asset balance, multi-cavity class-101 hardened steel molds significantly reduce your per-part price over long production cycles. By optimizing layout runner gates and stabilizing cooling cycle times across multi-cavity cavities, we guarantee stable output for over 1 million cycles, bringing down the lifetime injection mold tooling cost dramatically.
Our production floor is fully equipped to handle advanced engineering-grade thermoplastics and polymers. Under our custom injection molding services, we process heavy-duty ABS, Polycarbonate (PC) for impact-resistant appliance housings, glass-filled Nylon 66 (PA66-GF30) with specialized drying control metrics, flexible or rigid TPU overmolding, and advanced polymer composites like Delrin or PEEK.
Yes, absolute manufacturing readiness is validated locally. Our Texas-based engineering group performs deep pre-tooling DFM analysis, including automatic cavity filling analysis, gate shear stress calculation, warpage simulation loops, and wall-thickness optimization to catch toolmaker errors and processing flaws before tool fabrication begins.
To deliver complete turnkey OEM manufacturing solutions, our lines execute contract post-processing post-press. We run specialized automated thermal heat staking parameters processing, multi-shot insert molding consolidation, component ultrasonic welding, automatic spot resistance welding for electrical module elements, and final pack-out ready shipping logistics management.
We eliminate international procurement risk through a clean hybrid business model. All technical accountability, contract management, DFM engineering reviews, and first-mile communications are held securely by our team in Conroe, Houston, Texas. Meanwhile, our scalable Asia infrastructure lines execute cost-effective tool fabrication and bulk contract part output.
Yes, absolutely. We support product development scaling and hardware startups by providing low-cost aluminum or bridge tooling methods. Your platform can execute rapid market validation loops using short-run production batches (ranging from 500 to 1,000+ custom plastic parts), seamlessly scaling up to automated steel multi-cavity systems when market velocity demands.
Haumann Group operates under a rigid quality management network certified by ISO 9001 and IATF 16949 international standards. For high-demand auto and medical electronics components, we apply strict cavity-level component validation tracking, visual inspection loops, barcode labels processing, and complete coordinate measuring machine (CMM) first-article dimension traceability data.