From tooling to mass production — TOPFIRE delivers precise, cost-effective plastic components with stable quality.
Mold Design
Tooling Production
Injection Molding
Quality Inspection
Surface Finishing
Material Options
Mass Output
Custom plastic injection molding is a manufacturing process in which plastic materials are heated until molten and then injected into precision molds under high pressure. After cooling and solidifying, the mold opens to produce highly accurate and repeatable plastic components with complex shapes and fine details.
Our custom plastic injection molding service goes beyond simple part production. We work closely with customers to optimize product design for manufacturability, recommend suitable engineering plastics, and ensure stable production from prototype to mass manufacturing. Whether you require a small batch of functional prototypes or large-scale production, we deliver consistent quality, tight tolerances, and reliable lead times to support your product development and market launch.
Engineering-driven manufacturing for complex geometries. From tight-tolerance functional parts to multi-material consumer products, we deliver consistent quality at scale.
Start with a signed NDA to protect your IP. We provide free Design for Manufacturability (DFM) analysis to optimize wall thickness and draft angles, plus expert advice on resin selection.
Validate your design before cutting steel. We offer Vacuum Casting, 3D printing and CNC machining to test form, fit, and function. We support Low-Volume Trial Runs for market verification.
In-house tooling powered by Makino & Mikron high-speed CNCs. We fabricate durable SPI Class 101-103 molds capable of μm-level accuracy and millions of shots.
90T–1000T press capacity (Sumitomo/Fanuc). We utilize decoupled molding processes to ensure dimensional stability. ISO Class 7/8 Cleanroom available for medical parts.
A true one-stop solution. In-house Spray Painting, Silk Screening, Pad Printing, and Ultrasonic Welding. We handle full mechanical assembly to reduce your supply chain complexity.
Dimensional inspection, visual checks, material verification, and process inspection can be arranged according to project requirements.
Stable color and texture for a premium and professional look.
Clear logos and graphics to strengthen your brand image.
Reinforced structures and precise design ensure long-term stable performance.
Topfire offers a wide range of available injection molding materials, covering core categories such as general materials, engineering materials, specialty engineering plastics, and modified reinforced plastics.
We can precisely match materials to customer needs and support procurement from customer-specified suppliers to ensure optimal compatibility between materials and injection molded parts.
Post-injection molding post-processing is crucial for achieving the ultimate performance and appearance of plastic parts. It optimizes surface texture, enhances durability, and meets industry compliance requirements.
Topfire offers post-processing services such as painting, pad printing, antimicrobial treatment, CNC precision machining, and wear-resistant/UV-resistant coatings to meet the plastic part needs of various industries.
| Category | Specific Process | Key Features | Industry Standards |
|---|---|---|---|
| Appearance Enhancement | Spray Coating (Painting) UV / PU / Soft-Touch |
Custom color matching (Pantone/RAL) Excellent surface texture control |
Refer to: IATF 16949 Compliance: RoHS 2.0 |
| Pad & Screen Printing Logo & Marking |
Multi-color printing supported High precision alignment |
Medical: ISO 10993-1 Food Contact: FDA |
|
| Plastic Plating Chrome / NCVM |
Metallic look for plastic parts Stable adhesion performance |
Test: ASTM D3359 EU RoHS 2.0 Compliant |
|
| Performance Enhancement | Hard Coating Protective Finish |
Enhanced scratch resistance Protects against daily wear |
Hardness Test: ASTM D3363 Abrasion: ASTM D4060 |
| UV-Resistant Coating Outdoor Protection |
Prevents yellowing and fading Weatherability tested |
Test Std: ASTM G154 | |
| Dispensing & Sealing Waterproofing |
Gasket dispensing for sealing Dust & moisture protection |
Rating: IEC 60529 (IPXX) UL 50E Compliant |
|
| Structural Finishing | CNC Precision Machining Secondary Operations |
Drilling, tapping, and facing High Precision: ±0.01mm |
Aerospace: AS9100 Medical: ISO 13485 |
| Deburring & Polishing Surface Refinement |
Removes flash and sharp edges Smooth surface finish |
Cleanliness: ISO 16232 Biocompatibility: ISO 10993 |
|
| Insert Installation Heat Staking |
Secure metal-to-plastic bonding High pull-out force |
Automotive: IATF 16949 Quality: ISO 9001 |
TOPFIRE can support custom plastic injection molding for electronic product housings, internal brackets, structural parts, buttons, covers and assembly-related plastic components. We focus on parts that need to fit with PCBA, connectors, screws and final device assembly.
Yes. Before mold making, we can review key design details such as wall thickness, draft angle, ribs, screw bosses, snap-fit structures, connector openings, PCBA clearance and assembly method. This helps reduce tooling risk and improve product manufacturability.
Common materials may include ABS, PC, PC+ABS, PP, PA and other engineering plastics depending on product requirements. Material selection should consider strength, heat resistance, appearance, flame-retardant requirements, application environment and cost.
Yes. Depending on the product requirement, plastic parts can be finished with spray painting, pad printing, silk screen printing, texture, polishing, laser marking or other appearance treatments. The suitable process depends on material, product design and usage environment.
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