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 +
Capacidad mensual de piezas
50 +
Fabricación mensual de moldes
± 0,0254 mm
Tolerancia del molde de precisión
± 0.05 mm
Tolerancia de moldeo de precisión
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.
Automoción
Structural and functional components including ECU housings, fluid reservoirs, and dashboard systems.
Productos sanitarios
Instrumentos y carcasas biocompatibles para herramientas quirúrgicas, conectores intravenosos y carcasas de implantes.
Aeroespacial
Carcasas de precisión y componentes de protección para carcasas de drones, cubiertas de sensores y sistemas de conectores.
Herramientas y equipos
Piezas funcionales duraderas como empuñaduras de herramientas eléctricas, paneles de control y conjuntos de carcasas.
Electrónica de consumo
Productos de consumo ergonómicos, como cuerpos de maquinillas de afeitar, mangos de cepillos de dientes y envases de cosméticos.
Cuidado personal
Componentes mecánicos robustos para cuerpos de válvulas, protecciones de máquinas y sistemas neumáticos.
Featured Case Study: Precision Lamp Component Molding
Desafío del proyecto
- Claridad óptica de pared delgada de 0,8 mm.
- Requisito de transmisión de luz 95%.
- Tiempo de ciclo inferior a 25 s para grandes volúmenes.
Nuestro enfoque técnico
- Plaquitas de aleación de cobre sin berilio para un mecanizado rápido.
- PMMA de calidad óptica con aditivos antiamarilleo.
- Control de velocidad de inyección en 3 etapas + moldeo vario-térmico.
Resultados cuantificables
- Transmisión de luz de 97,2% (frente al objetivo de 95%).
- Tiempo de ciclo de 22 s (12% más rápido que el requerido).
- Acabado superficial Ra 0,02μm (sin pulido posterior).
Fabricación de componentes de altavoces a medida
Producción en serie de pequeñas piezas de botones
Fabricación de RV mediante moldeo por inyección
Mascarilla para bebés moldeada por inyección de silicona
Fabricación de carcasas para equipos de inspección por moldeo por inserción
Fabricación de la carcasa del reposabrazos de la consola central del automóvil mediante moldeo por inyección
Moldeo de plástico a medida para la fabricación de carcasas de mandos de RV
Proceso de moldeo por inserción para la producción de lotes pequeños de conectores de mesa
Producción de componentes para mandos a distancia de aviones por moldeo por inserción
Moldeo por inyección Producción en serie de cajas de conexiones y cubiertas para transformadores
Our Material & Surface Finishing Ecosystem
Access over 100 commercial-grade polymers, including advanced modified compounds, alongside 10+ cosmetic and functional surface finishing solutions.
Materiales de moldeo por inyección
Engineering & General Plastics
Common plastic materials including ABS, PC, Nylon (PA), POM, etc.
Polímeros de alto rendimiento
Advanced resins like PEEK, PEI, and PPSU
Modified Compounds & Elastomers
Glass-filled, flame-retardant (UL94 V-0), TPE/TPU, and LSR.
Operaciones secundarias
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
Revestimientos funcionales
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 | Moldeo por inyección | Impresión 3D | Mecanizado CNC |
|---|---|---|---|
| Optimal Batch Size | 500+ pcs | 1–100 unidades | 1–500 pcs |
| Coste unitario | Más bajo | Medio | Más alto |
| Initial Setup Cost | Alta | Muy bajo | Low–Medium |
| Opciones de material | Nearly all | Resins, nylon, PLA, etc. | Engineering plastic stock |
| Plazos de entrega | 7+ days | 1–5 days | 3–10 days |
| Max. Precision | ±0,05 mm | ±0,1 mm | ±0,005 mm |
Dos plantas, más de 50 máquinas de moldeo por inyección
Con centros de moldeo por inyección tanto en China como en México, First Mold se encuentra en una posición idónea para atender de forma eficaz a su cartera de clientes a nivel mundial.
Centro de fabricación de China
Nuestra planta de fabricación en China cuenta con más de 50 máquinas de moldeo por inyección, con capacidades que van desde las 90T hasta las 1000T. Estas instalaciones se centran en el manejo de utillajes complejos, la producción en serie a gran escala y los componentes con tolerancias estrictas.
Prensa de 1000T
Planta de México
Nuestras instalaciones de México cuentan con más de una docena de máquinas de moldeo por inyección de última generación. Están diseñadas específicamente para atender a los clientes norteamericanos con la fabricación rápida de matrices y prototipos de plástico.
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.
Preguntas frecuentes sobre los servicios de moldeo por inyección
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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