Custom Injection Molding Services

Custom plastic prototypes and end-use production parts on demand, covering the full cycle from R&D to mass production. Get a free injection molding quote instantly, along with expert DFM analysis to optimize design, reduce costs, and improve production efficiency.

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Injection Molding Capabilities

At GSG-Tech, we offer a range of advanced injection molding solutions to support everything from prototyping to full-scale production, ensuring consistent quality, efficient lead times, and cost-effective results.

Injection Mold Tooling

We provide precision mold design and manufacturing tailored to your part requirements, achieving tight tolerances of up to 0.0008 in (0.02 mm) and offering free mold flow analysis. Our tooling solutions are built for durability and accuracy, ensuring stable production and consistent, repeatable part quality across production runs.

Overmolding

Overmolding allows multiple materials to be combined into a single part, improving functionality, grip, and overall performance. This process is ideal for applications requiring enhanced ergonomics,

Insert Molding

Insert molding integrates metal or other components directly into plastic parts during the molding process. This approach improves structural strength, reduces assembly steps, and enhances product reliability for complex applications.

Injection Molding Manufacturing Network

GSG-Tech's network features 50+ advanced injection molding machines with clamping forces ranging from 90 to 830 tons. Managed by experienced project managers, we handle projects of any scale and complexity. We produce plastic molded prototypes and production parts with global shipping from our Chinese facilities. Clear communication and professional guidance simplify every order, ensuring production stays on schedule and meets your exact specifications.

50+

Machine Groups

20,000+

Global Customers

120+

Countries & Regions

Injection Molding Materials

We offer a broad range of thermoplastic and thermoset materials, each selected for its performance characteristics and suitability for different applications.

Metals

Aluminum

Lightweight, corrosion-resistant, and featuring a high strength-to-weight ratio, aluminum is ideal for aerospace, automotive, and construction industries. It is also highly machinable.

Color:

Silver

Grades:Aluminum 5052, 5083, 6061

Lead Time:Approx. 5 business days

Surface Finishes

Enhance your parts with our comprehensive range of surface finishes. We offer standard SPI polishes, custom texturing, painting, and coating options to meet your exact aesthetic and functional requirements.

As-Machined

Provides a cost-effective option with visible tool marks, as the surface is left directly from the CNC machine.

Anodizing

Improves corrosion and wear resistance while allowing for color dyeing, ideal for aluminum components.

Polishing

Achieves a high-gloss finish, reducing surface roughness and enhancing the aesthetic appeal of the metal.

Sandblasting

Uses pressurized sand or other media to clean and treat the surface, creating a uniform matte finish.

Brushed Finish

Creates a unidirectional fine texture, reducing the visibility of marks and scratches on the surface.

Powder Coating

Provides a thick, durable, and wear-resistant coating with excellent color and texture options for various surfaces.

Electroplating

Bonds a thin metal layer to the part, enhancing wear resistance, corrosion resistance, and surface conductivity.

Black Oxide

A conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.

Electropolishing

An electrochemical process that smooths and brightens the surface while significantly improving corrosion resistance.

Alodine

A chromate conversion coating for aluminum that provides corrosion protection and improves paint adhesion.

GSG-Tech Ultra-High Gloss Surface Finishes

We offer specialized GSG-Tech ultra-high gloss finishes for your injection molds. Our advanced surfacing technology is designed for the most demanding applications. Upload your designs for a detailed quote.

GSG-Tech (GSG-UHG)

Ultra-High Precision

Optical-grade mirror finish with absolute smoothness. Engineered for ultra-high-end consumer electronics, optical elements, and decorative panels requiring a pristine, distortion-free surface with enhanced hardness for mar resistance.

Technical Specifications (GSG-Tech)

Finishing Look

Ultra-High Gloss

GSG Finish Grades

GSG G1, G2, G3

Surface Roughness Ra (μm)

GSG G1: 0.005 to 0.010GSG G2: 0.008 to 0.015GSG G3: 0.012 to 0.020

Injection Molding Capabilities

Our injection molding services cover every stage from design to delivery. We produce high-tolerance, quality-certified prototypes and large-scale parts for global clients with rapid turnaround.

Standard

Description

Max Part Size

1200 × 1000 × 500 mm

Min Part Size

5 × 5 × 5 mm

Part Repeatability

+/- 0.1 mm

Mold Cavity

Single-cavity, Multi-cavity, Family Molds

Available Mold Types

Steel and Aluminum molds. Production volumes: <1,000, 5,000, 30,000, and 100,000+ shots

Mold Cavity Tolerance

+/- 0.02 mm

Secondary Operations

Mold Texturing, Pad Printing, Laser Engraving, Threaded Inserts, and Basic Assembly

Undercuts

Y-type, L-type Undercuts

Wall Thickness

0.5 mm to 5 mm

Draft Angle

0.5° to 2°

Ribs/Gussets

0.5 to 3 mm thickness

Bosses

3 mm to 10 mm diameter

Lead Time

Most orders completed within 15 business days

How to Place an Order for Injection Molding Services at GSG-Tech

GSG-Tech is dedicated to providing simple and efficient custom injection molding services. From online quoting to high-quality plastic injection molding—and ultimately to production-ready molded parts—our process ensures precision, speed, and reliability.

1. Upload Design File

Upload your 3D CAD files and 2D drawings to GSG-Tech's platform to initiate your injection molding project.

2. Configure Details and Get a Quote

Choose materials, surface finishes, and shipping options to receive an instant injection molding quote.

3. Review T1 Sample

We provide a sample for your approval to ensure all specifications are met before moving forward.

4. Production Begins

After sample confirmation, full-scale injection molding production starts with strict quality control.

5. End-to-End Process Visibility

Track your order status, production progress, and logistics updates in real time throughout the process.

6. Delivery

Your finished injection molded parts are shipped from our facilities directly to your destination, ready for use.

Why Choose GSG-Tech

ISO-Certified

Our ISO 9001 and ISO 13485:2016-certified CNC machining process ensures dimensional accuracy, surface integrity, and consistent performance across prototypes and production runs.

98% On Time Delivery

With advanced CNC equipment, optimized scheduling, and an integrated manufacturing network, we deliver parts with industry-leading speed.

15+ Year Experience

Our experience enables us to anticipate challenges early, optimize production processes, and consistently deliver reliable, high-precision parts.

Engineering Support

Our experienced engineering team works closely with you from design to delivery.

Ready to get started?

Injection Molding Quality Control

We prioritize quality at every stage from design to production. Cross-functional reviews and strict controls ensure a 90% first-pass yield for all plastic molded parts.

Injection Molding Quality Assurance Inspection

01. Mold & Pre-production Inspection

Sound mold design and pre-production checks are critical to quality. Engineers consider part geometry, material flow, and cooling systems to ensure smooth production. T1 samples are tested to ensure all functions operate correctly, delivering stable and consistent results.

02. In-process Quality Control

Continuous monitoring during production ensures consistency of custom molded parts. Machine parameters (e.g., speed, pressure, temperature) are monitored within set ranges. Regular inspection of dimensions and aesthetics helps identify and resolve issues quickly.

03. Final Inspection

Finished parts undergo comprehensive final inspection to ensure compliance with design and quality standards. Teams check dimensions, aesthetics, and physical properties. Precision instruments like CMM and colorimeters verify that all components meet strict requirements.

FAQ

What are the main stages of injection molding?

Injection molding typically follows four essential steps. First, the mold is tightly closed to prepare for injection. Then, molten plastic is injected into the mold cavity under pressure. After filling, the material cools and solidifies to form the final shape. Finally, the mold opens and the finished part is ejected, completing one production cycle.

How much does your injection molding service cost?

Can I get prototype parts before full-scale production?

Injection Molding Capabilities

Injection Mold Tooling

Overmolding

Overmolding allows multiple materials to be combined into a single part, improving functionality, grip, and overall performance. This process is ideal for applications requiring enhanced ergonomics,

Insert Molding

Injection Molding Manufacturing Network

50+

Machine Groups

20,000+

Global Customers

120+

Countries & Regions

Injection Molding Materials

We offer a broad range of thermoplastic and thermoset materials, each selected for its performance characteristics and suitability for different applications.

Metals

Aluminum

Lightweight, corrosion-resistant, and featuring a high strength-to-weight ratio, aluminum is ideal for aerospace, automotive, and construction industries. It is also highly machinable.

Color:

Silver

Grades:Aluminum 5052, 5083, 6061

Lead Time:Approx. 5 business days

Why Choose GSG-Tech

ISO-Certified

Our ISO 9001 and ISO 13485:2016-certified CNC machining process ensures dimensional accuracy, surface integrity, and consistent performance across prototypes and production runs.

98% On Time Delivery

With advanced CNC equipment, optimized scheduling, and an integrated manufacturing network, we deliver parts with industry-leading speed.

15+ Year Experience

Our experience enables us to anticipate challenges early, optimize production processes, and consistently deliver reliable, high-precision parts.

Engineering Support

Our experienced engineering team works closely with you from design to delivery.