Custom Insert Molding Services

At Winzun Mould, we build inserts right into your plastic parts – whether you need metal, threaded, pin, bushing, or terminal inserts. With our integrated approach to mold design, precision machining, and injection molding, you eliminate post‑molding assembly steps, achieve stronger part integrity, and scale from prototype to mass production with consistent, reliable quality. 

What Can Insert Molding Do For Your Product?

It's not just about embedding a metal pin or a threaded bushing. It's about turning a multi‑step assembly into a single, stronger, more reliable component. 
At Winzun mold, we've used insert molding to help customers achieve:
Miniaturization –connectors, switches, and sensors with micron‑level consistency
High strength – automotive gears, housings, and brackets that survive vibration, heat, and torque
Cost reduction – eliminating secondary operations like welding, staking, or manual insertion
Whether your part is smaller than a coin or carries heavy loads, we design the mold and the process to make it work – from first sample to full production.

Materials Used For Insert Molding

Insert molding is a manufacturing process that involves combining plastic and metal parts to create components. Here are some common materials used for insert molding:

Thermoplastics:
Polypropylene (PP)
Polyethylene (PE)
Polycarbonate (PC)
Acrylonitrile Butadiene Styrene (ABS)
Polyamide (Nylon)
Polyethylene Terephthalate (PET),etc. 

Metals:Stainless steel
Brass
Aluminum
Copper
Titanium,,etc.
1. Request Quote

1. Request Quote

Once we receive your inquiry, we provide a quote within 48 hours to start the project promptly.
2. DFM & Mold Flow

2. DFM & Mold Flow

We provide DFM and Mold Flow analysis to ensure manufacturability and optimize part quality.
3. Mold Design

3. Mold Design

We create precise 3D mold designs for efficient production and long-lasting performance.
4. Mold Manufacturing

4. Mold Manufacturing

Our skilled technicians use CNC and EDM machining to fabricate precision two-shot molds.
5. Sample Confirmation

5. Sample Confirmation

After mold completion, we produce initial samples for your review and approval.
6. Mass Production

6. Mass Production

Following sample approval, we begin efficient mass production to meet your volume and timeline requirements.
7. Strict Quality Inspection

7. Strict Quality Inspection

Every part undergoes rigorous testing for appearance, dimensions, color accuracy, and assembly fit.
8. Final Delivery

8. Final Delivery

We coordinate with reliable logistics partners to ensure safe and timely delivery to your location.

Our Solutions

We have made automotive sensor housings, medical diagnostic enclosures, consumer electronics router shells, industrial power tool grips, and home appliance control panels.
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