Custom Injection Molding Services
We provide high-quality injection-molded products worldwide, with a clear focus on lowering costs for our customers.
- 15% cost optimization
- 45M parts & 600M molds annually
- 15 years experiences
Our Injection Molding Capabilities
We manufacture components using advanced plastics, thermoplastic elastomers (TPE/TPU), and liquid silicone rubber. Select the specific molding process below to match your project's structural and material needs.
35M +
Monthly Parts Capacity
50 +
Monthly Molds Fabrication
± 0.0254 mm
Precision Mold Tolerance
± 0.05 mm
Precision Molding Tolerance
Tips: Need to learn the basics? Read our Injection Molding Guide.
Injection Molding Applications & Proven Results
Manufacturing tight-tolerance components for highly regulated and performance-critical industries.
Automotive
Structural and functional components including ECU housings, fluid reservoirs, and dashboard systems.
Medical Device
Biocompatible instruments and enclosures for surgical tools, IV connectors, and implant casings.
Aerospace
Precision enclosures and protective components for drone housings, sensor covers, and connector systems.
Tools & Equipment
Durable functional parts like power tool grips, control panels, and housing assemblies.
Consumer Electronics
Ergonomic consumer products such as razor bodies, toothbrush handles, and cosmetic packaging.
Personal Care
Robust mechanical components for valve bodies, machine guards, and pneumatic systems.
Featured Case Study: Precision Lamp Component Molding
Project Challenge
- 0.8mm thin-wall optical clarity.
- 95% light transmission requirement.
- Cycle time under 25s for high-volume.
Our Engineering Approach
- Beryllium-free copper alloy inserts for rapid tooling.
- Optical-grade PMMA with anti-yellowing additives.
- 3-stage injection speed control + vario-thermal molding.
Quantifiable Results
- 97.2% light transmission (vs 95% target).
- 22s cycle time (12% faster than requirement).
- Ra 0.02μm surface finish (no post-polishing).
Custom Speaker Component Manufacturing
Mass Production of Small Button Parts
VR Manufacturing Via Injection Molding
Silicone Injection Molded Baby Mask
Inspection Equipment Housing Manufacturing By Insert Molding
Manufacturing Automotive Center Console Armrest Housing via Injection Molding
Custom Plastic Molding For VR Remotes Controller Housing Manufacturing
Insert Molding Process For Small Batch Of Table Connectors Production
Aircraft Remote Controller Component Production By Insert Molding
Injection Molding Mass Production Of Transformer Junction Boxes And Covers
Our Material & Surface Finishing Ecosystem
Access over 100 commercial-grade polymers, including advanced modified compounds, alongside 10+ cosmetic and functional surface finishing solutions.
Injection Molding Materials
Engineering & General Plastics
Common plastic materials including ABS, PC, Nylon (PA), POM, etc.
High-Performance Polymers
Advanced resins like PEEK, PEI, and PPSU
Modified Compounds & Elastomers
Glass-filled, flame-retardant (UL94 V-0), TPE/TPU, and LSR.
Secondary Operations
In-Tool Textures & Polishing
Precise VDI 3400 mold textures, matte effects, or Ra 0.05μm SPI mirror finishes
Cosmetic Decorating
Pad printing, precision laser engraving (for serials/UL marks), and custom color matching
Functional Coatings
EMI/RFI shielding, electroplating, and specialized protective layers
Which Process is Right for Your Plastic Parts?
You can quickly determine the optimal production process for your product based on batch size, material type, lead time, and cost.
When to choose injection molding?
- Your total volume exceeds 500 units
- You need certified or high-performance materials
- You require excellent surface finish or fine textures
- You demand high consistency and the design is already locked
- The part has uniform thin walls, multiple ribs, or numerous snap-fit features
If you’re still undecided, this 3D Printing vs Injection Molding guide lays out all the key trade-offs.
| Factor | Injection Molding | 3D Printing | CNC Machining |
|---|---|---|---|
| Optimal Batch Size | 500+ pcs | 1–100 pcs | 1–500 pcs |
| Unit Cost | Lowest | Medium | Highest |
| Initial Setup Cost | High | Very Low | Low–Medium |
| Material Options | Nearly all | Resins, nylon, PLA, etc. | Engineering plastic stock |
| Lead Time | 7+ days | 1–5 days | 3–10 days |
| Max. Precision | ±0.05 mm | ±0.1 mm | ±0.005 mm |
Two Facilities, 50+ Injection Molding Machines
With injection molding centers in both China and Mexico, First Mold is well-positioned to conveniently serve its global customer base.
China Manufacturing Hub
Our China manufacturing base is equipped with over 50 injection molding machines ranging from 90T to 1000T. This facility focuses on handling complex tooling, high-volume mass production, and strict-tolerance components.
1000T Press
Mexico Facility
Our Mexico facility features over a dozen advanced injection molding machines. It is specifically set up to serve North American buyers with rapid tooling and plastic prototypes.
Why Choose Us As Your Plastic Parts Supplier
Advanced machinery is just the starting point. We turn your CAD files into profitable, high-volume parts through proactive problem-solving, scientific management, and uncompromising compliance.
Real DFM
We don’t just point out issues — we give you ready-to-implement fixes. Weld lines, sink marks, and other problems are flagged and solved before the mold is built.
Smart Cost Reduction
First Mold manages production efficiency scientifically. Cycle time, tool life, automation — we squeeze the real cost out across tens or hundreds of thousands of parts, saving you serious money.
Industry You Can Trust
We’ve made medical, automotive, and consumer electronics parts. We know your hidden hurdles — factory audits, material specs, compliance — so your project gets moving fast.
Experienced Quality Control
First Mold holds relevant certifications and runs a mature management system. We test materials, monitor the process in real time, and deliver parts under 100% inspection or statistical sampling.
4 Steps to Get Your Plastic Parts
Custom injection molding is highly technical, but ordering it shouldn't be. Upload your 3D CAD, and our team will handle the heavy lifting from engineering to global delivery.
Quote & DFM Analysis
Upload your CAD files securely. Within 24 hours, you will receive a comprehensive quote and a free DFM report
Tooling Fabrication & T1 Samples
Once specs are locked, we machine your custom mold. We then run physical T1 trial samples and send them to you.
Mass Production & Real-Time QC
We launch full-scale production. Automated presses and CMM inspection routines for uncompromising consistency.
Finishing & Global Logistics
We handle any required surface finishing and assembly. Finally, parts are shipped from our China or Mexico hubs to your dock.
FAQ For Injection Molding Services
How much does a custom plastic injection mold cost?
It depends entirely on part size, geometry, and how many parts you need the mold to produce. A simple rapid tool might cost a couple of thousand dollars, while a high-cavity, high-volume automotive mold can run into the tens of thousands. Send us your 3D file and you’ll get an accurate quote within 24 hours — no guesswork, no hidden fees.
What is your minimum order quantity (MOQ) for custom injection molding?
Typically, you’ll start to see real unit cost advantages at volumes over 500 pieces. But if you only need a few hundred for market testing, we can use a rapid tooling approach to keep your initial investment low. There’s no hard threshold — we work out the most cost-effective option for your specific situation.
Who owns the injection mold tooling after it is built?
You do. If you paid for the mold, the tooling is 100% yours. We’re happy to store and maintain it for free, but you can pull it at any time. This is clearly stated in our agreement, no fine-print tricks.
What progress reports will I receive during mold fabrication?
You won’t be left guessing. You’ll receive updates at four key milestones:
- Design complete: DFM and 3D mold design for your approval.
- Rough machining done: Photos showing the mold base taking shape.
- Before T0 trial: A confirmed T0 trial schedule.
- After T0 trial: Physical T0 samples shipped to you, plus dimensional reports and process parameters.
And throughout the build, just ask — our engineers can snap photos or shoot short videos for you on the spot.
How do you handle plastic part design changes (ECN) after tooling approval?
We know late changes are expensive, so we’ll assess the impact quickly once you raise an ECN. Minor tweaks — like adding a rib or reducing material — we often handle at cost or sometimes even free. For larger changes, we’ll review the steel modification plan and cost with you immediately, then execute fast so your launch isn’t delayed.
What happens if the injection mold wears out during mass production?
Any mold we build is covered by a free warranty against normal, non-misuse wear within its designed lifespan. During production, we monitor tool condition proactively, so we’ll alert you about preventive maintenance before an issue surfaces. If a problem does occur — even in the middle of the night — our repair team is on standby. You don’t need to chase us.
What ISO certifications do your injection molding facilities hold?
We hold ISO 9001 for quality management. For medical or automotive programs, we have the capability and systems aligned with ISO 13485 and IATF 16949. Certificates can be shared right away, and you’re welcome to audit us in person.
Can I transfer an existing injection mold to your facility for production?
Of course. We’ll start with a free mold condition assessment and provide a detailed trial report showing what needs maintenance or adjustment. Once the tool is verified, we can put it straight into production. We handle the entire transfer process — you just wait for good parts to arrive.
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