Custom Plastic Injection Mold and Injection Molding Manufacturer in China

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Engineering, tooling, and production under one roof.

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Our Core Capabilities

Alpine Mold delivers robust tooling and injection molding solutions with stable long-term production performance, clear project timelines, and proactive risk control.

Mold Design & Engineering

DFM and Moldflow analysis before tooling
3D mold design focused on manufacturability

Design optimization for stable molding performance

25-person engineering team supporting complex mold projects

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Injection Mold Manufacturing

CNC, EDM, wire EDM and mold trials in-house
Support rapid tooling and production tooling

HASCO, DME, Meusburger & MISUMI mold standards

100+ machining and inspection equipment enable mold accuracy down to ±0.01 mm

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Custom Injection Molding

30+ injection molding machines from 50–800 tons
insert molding, overmolding and two-shot molding
IQC, IPQC and FQC inspection throughout production

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About Alpine Mold

Precision injection mold tooling and injection molding services backed by engineering expertise and manufacturing excellence.

Since 2002, Alpine Mold has been a professional plastic injection mold manufacturer in Shenzhen, China, specializing in injection mold design, injection mold manufacturing, and injection molding services. We mainly serve industries including consumer electronics, automotive, medical, security products, smart appliances, industrial equipment, and new energy applications.

With rich experience in international mold standards such as HASCO, DME, and MISUMI, Alpine Mold supports customers across North America, Europe, Australia, Brazil, Turkey, and other global markets, delivering reliable tooling solutions and stable mass production.

About Us

25+

Years Mold Experience

8,000 m²

Factory Area

65+

Countries Served

10,000+

Mold Projects Completed

Why Choose Alpine Mold

From engineering analysis to project delivery, Alpine Mold helps you reduce manufacturing risks with reliable injection moulds and injection moulding solutions.

Engineering Support Before Tooling

Our engineers use DFM analysis and Moldflow simulation to identify potential molding risks and recommend design improvements before tooling, helping reduce mold modifications and trial runs.

Integrated In-House Manufacturing

We handle mold design, tooling, trials, and injection molding, post-processing in-house, using 100+ manufacturing and inspection machines and 30+ injection molding presses to control quality and delivery schedules

Dedicated Project Management Team

Each project is managed by an engineer who serves as your main contact, providing progress updates, mold trial feedback, and inspection reports throughout the project. This can help you make timely decisions and keep your project on schedule.

Quality Control at Alpine Mold

Plastic injection molds and injection molded parts supported by strict quality control systems.

Quality is at the heart of everything we do at Alpine Mold. We invest in skilled people, advanced inspection equipment, and quality management systems to ensure stable production quality for our customers every time..

ISO 9001:2015 and IATF 16949 certified.
Dedicated quality team with 11 experienced inspectors.
24-hour manufacturing cover.
In-house test and ZEISS CMM inspection facility.
Production sign-on approval, patrol inspection intervals and full run quality monitoring.
Tailored test and inspection activity depending on customers needs.
Consistently striving for 0% non-compliance and 100% customer satisfaction.

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Cooper Electrodes Inspection

Heat Treatment Hardness Inspection

Mold Steel Hardness Inspection

Mold Core and Cavity Steel Dimension Inspection

Mold Assembly Inspection

Fixture Inspection for Injection Molded Parts

cmm inspection report for plastic injection parts

size inspection for custom plastic parts

Dimension Inspection for Custom Plastic Parts

Color Inspection for Plastic Parts

Height Inspection for Injection Molding Parts

QC Inspection

Our In-House Manufacturing Capabilities

As a China-based injection molding manufacturer, Alpine Mold keeps key manufacturing processes under one roof .

注: 建议上传图片大小690px*460px

Precision Mold Assembly Workshop
General Mold Assembly Workshop
CNC Machining Center
CNC machining center
Charmilles Mirror EDM Machines
Charmilles Wire EDM Machines
Two head EDM machines
Mold Polishing Workshop
Inspection Machines
FANUC Injection Molding Machine
Injection Molding Sample Room
Injection Mold Warehouse

How We Work

From product optimization and mold making to injection molding production, every stage is carefully controlled to ensure quality and reliability.

DFM Analysis & Mold Design

Injection Mold Manufacturing

Injection Mold Trial & Validation

Injection Molding Production

Post-Processing Operations

Packaging & Delivery Support

Our Featured Projects

Real-world projects demonstrating our expertise in injection mold making and custom injection molded parts.

Automotive Sunroof Injection Mold

Number of Molds: 1 set
Mold Material: P20HH
Parts Material: PP+30%GF
Lead time: 40 days

Offer Chair Parts Injection Molding

Number of Molds: 2 sets
Mold Material: P20HH
Parts Material: PA+30%GF
Lead Time: 40 days

Autonomous storage robot injection molded parts

Autonomous Storage Robot Inject Molding

Number of Molds: 1 set
Mold Material: 718H
Parts Material: ABS FR UV
Surface Finish: Texture (VDI21)

Rabbit Tunnel Injection Moulding

Number of Molds: 6 sets
Mold Material: S136H Parts
Material: ABS+ UV, Nylon PA66+ UV
Surface Finish: YS20023/YS20021 Polished

Controller Panel Overmolding

Number of Molds: 1 set
Mold Material: S136
Parts Material: PC+TPE
Lead Time: 38 days

Diaphragm Pump Injection Molding

Number of Molds: 15 sets
Mold Material: P20HH
Parts Material: PPS+GF40%
Lead time: 25 days

Insect Bite Healer Injection Molding

Number of Molds: 6 sets
Mold Material: S136
Parts Material: PC, ABS+PC
Surface Finish: Matte and texture

Injection Molding Service for Vehicles Switch Panel

Vehicles Switch Panel Injection Molding

Number of Molds: 1 set
Mold Material: 718H
Parts Material: ABS+PC
Lead Time: 30 days

EV Car Charger Injection Molding

Number of Molds: 9 sets
Mold Material: S136
Parts Material: PC+ASA (V0)
Lead Time: 38 days

Industries We Serve

We support global customers across various industries with custom injection molds and reliable injection molding production.

Real Reviews from Real Customers

We’ve partnered with hundreds of clients worldwide, and their feedback speaks for itself. Here are some of their testimonials.

"I have worked with Alpine Mold on multiple switch panel projects. We provided the 3D design files, and their team handled everything from DFM, precise mold design to tooling and mass production. Their team is knowledgeable and experienced, and they consistently deliver products that meet or exceed our expectations. Alpine Mold has proven to be a professional and trustworthy injection molding partner.We highly recommend them."

Product Design Engineer at Siemens

"I want to congratulate Yuki for the great job she has done along these very important projects of 10 + 12 + 1 molds for Z***, so far. Now we have received the injected parts with very good quality, we are very pleased for this. In a month aprox, we will receive the molds (10 + 12) and we can verify the good quality we expect of the Alpine team. By sure, they are as good as the work done so far. Looking forward to develops new projects with Alpine."

Purchasing Director at Z*** Group

"I have collaborated with Alpine Mold on many injection tooling projects for automotive components. The precision and requirements for our automotive parts are extremely high, yet Alpine Mold consistently delivered molds that met our strict standards. Their expertise in complex tooling, reliable quality, and on-time delivery and great communciation make them a trusted mold partner for our global projects. I highly recommend Alpine Mold."

Tooling Engineer at GM

Frequently Asked Questions

Find quick answers to common questions about our injection mold making and injection molding services.

1. How do I get a quote?

To help us provide an accurate quotation as quickly as possible, please include the following information with your inquiry:

1. 3D CAD files in STEP, IGS, or X-T format

2. Material requirements, such as ABS, PP, PC, PMMA, Nylon, etc.

3. Surface finish requirements, such as glossy, matte, textured, etc.

4. Estimated production quantity per order, month, or year

5. Any special requirements, such as packaging, labeling, assembly, or delivery
2. When can I get the quotation?

We usually provide a quotation within 2 business days after receiving your inquiry.
If your project is urgent, please call us or let us know by email so that we can prioritize your quotation.
3. How do you guarantee the quality of injection molds?

We control mold quality through strict inspection and process control at every stage, from material inspection and machining to mold assembly, trial, and final validation.

Our quality control includes IQC, IPQC, and FQC inspections, dimensional checks with CMM equipment, mold trial reports, and sample inspection before final approval.

Only after the mold and samples meet the confirmed requirements will the mold be approved for shipment or mass production.

We also provide complete project documentation for quality traceability, including:

1. DFM Analysis Report

2. Mold Flow Analysis Report

3. 3D Mold Design Drawings

4. Detailed Tooling Schedule & Timeline

5. Original Steel Material Certificate

6. Heat Treatment Hardness Certificate

7. Full Mold Trial Reports (T1, T2, and further revisions)

7. Dimensional Inspection Report of Molded Samples

8. Sample Inspection Report

9. Final Packing & Shipping Documents before delivery
4. How do you guarantee the quality of mass production?

First, when we complete the mold, we will make the samples to you to check and confirm; after you confirm the final samples, it will be the standard parts. At the beginning of mass production, we will strictly inspect the products according to the standard parts.Second, we have professional QC for each working shift, QC will check each 2 hours during mass production. Finally, before shipment, our QC will arrange spot checks.
5. What’s the lead time?

Our Mold Lead Time: Usually 4–7 weeks, depending on the part structure and mold complexity.

Our Production Lead Time: Usually 1–2 weeks after sample approval, depending on the order quantity.
6. What’s the payment terms and methods?

Mold Payment: 40% deposit by T/T in advance, 30% second payment before sending out the first trial samples, and 30% mold balance after final sample approval.

Production Payment: 50% deposit in advance, and 50% balance before sending out the final goods.

Payment methods: We prefer to receive payment by wire transfer (T/T) to our company bank account. PayPal, Western Union is also acceptable.
7. How do you pack injection molds?

We use wooden crates to pack plastic injection molds. There are three main steps:

Step 1: Apply anti-rust oil to the mold surface.

Step 2: Wrap the mold with plastic film to protect it from moisture.

Step 3: Place the wrapped mold in a wooden crate and secure it properly to prevent movement during transportation.
8. How do you pack injection molded parts?

We normally use PE bags, bubble wrap and cartons to protect the parts during transportation. For parts with special appearance or protection requirements, we can also provide customized packaging.
9. Who owns the injection mold tooling?

The customer owns the mold because they pay for the mold development and manufacturing costs, whether the mold remains at our factory for production or is shipped to the customer.

Option 1: Keep the mold at our factory for production:

The customer owns the mold, while we store, maintain, and use it to produce parts according to the production agreement.

Option 2: Ship the mold to the customer after completion:

The customer owns the mold, and we can ship it to the customer for installation and production at their own facility.
10. What kind of after-sales service do you offer?

We provide after-sales support for both injection molds and mass-produced plastic parts.

1. Mold Issues: If any mold components are damaged within two years after delivery, we can provide replacement parts free of charge. Our team will also provide technical support and repair solutions when needed.

2. Mass Production Quality Issues:If you find any quality issues after receiving the parts, we will respond within 24 hours, analyze the root cause, and provide a practical solution based on the actual issue.

Our goal is to solve issues quickly and minimize any impact on your production.

Contact With Alpine Mold Today!

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Latest Blog Posts

2026-10-30

Delamination in Injection Molding: Causes, Solutions, And Prevention

Delamination in injection molding can lead to rejected parts, increased scrap rates, and costly production delays—but what causes plastic layers to separate, and how can you fix it?In this guide, we’ll explain the common causes of delamination, how to identify the defect, and practical solutions to

2026-10-21

Sticking Issues in Injection Molding: Causes, Solutions, And Prevention Guide

2026-10-15

Ejector Marks in Injection Molding: Causes, Solutions & Prevention

1. What Are Ejector Marks in Injection Molding?2. Common Types of Ejector Marks3. Common Causes of Ejector Marks and How to Fix Them4. How to Prevent Ejector Marks Before Mass Production5. Conclusion6. FAQ Are ejector marks affecting your plastic part quality and appearance? In this guide, you'l

Custom Plastic Injection Mold and Injection Molding Manufacturer in China

Our Core Capabilities

Mold Design & Engineering

Injection Mold Manufacturing

Custom Injection Molding

About Alpine Mold

Why Choose Alpine Mold

Engineering Support Before Tooling

Integrated In-House Manufacturing

Dedicated Project Management Team

Quality Control at Alpine Mold

Our In-House Manufacturing Capabilities

How We Work

Industries We Serve

Real Reviews from Real Customers

Frequently Asked Questions

1. How do I get a quote?

2. When can I get the quotation?

3. How do you guarantee the quality of injection molds?

4. How do you guarantee the quality of mass production?

5. What’s the lead time?

6. What’s the payment terms and methods?

7. How do you pack injection molds?

8. How do you pack injection molded parts?

9. Who owns the injection mold tooling?

10. What kind of after-sales service do you offer?

Latest Blog Posts

Delamination in Injection Molding: Causes, Solutions, And Prevention

Sticking Issues in Injection Molding: Causes, Solutions, And Prevention Guide

Ejector Marks in Injection Molding: Causes, Solutions & Prevention

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