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Preicison Plastic Injection Molding

Jinnfeng Plastic provides a one-stop solution for customized precision plastic injection molding, including free injection molding quotes, professional design for manufacturability (DFM) analysis, rapid prototyping, mass production, and process improvement suggestions. Through optimized design and strict quality management, we ensure efficient production and excellent performance of finished injection molded products. For customized solutions or more information, please feel free to contact us!
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  1. Custom Thermoplastic Injection Molding capabilities
  2. A fully automated production workshop with 3 injection molding centers
  3. Short, Medium, and Large size Injection Molding Production Runs
  4. Process Most Engineering and Commodity Grade Resins
  5. One special injection room for producing optical lenses, guides, and fresnel products
  6. Custom Automation/ medical/Security system Engineering and Manufacturing
  7. Custom Inventory Programs

Types of Injection Molding Technologies We Offer

Jinnfeng Plastic is One of the top high precision mold and molding factory base here in China. We are able to develop new product from Customer idea to actual part. While many associate injection molding solely with plastic parts, the technology encompasses a wide range of specialized processes such as plastic injection molding, metal injection molding, LSR, etc. At Jinnfeng Plastic, we provide 5 types of injection molding services as below.
Plastic Injection Molding

Plastic Injection Molding

The standard method for high-volume production of durable consumer goods, automotive components, and housings using polymers like ABS, PC, or nylon.
Two-Color Injection Molding

Two-Color Injection Molding

Combines two materials in a single cycle for multicolored consumer products, wear-resistant gears, and waterproof industrial parts.
Insert Molding

Insert Molding

Embeds metal or ceramic inserts into plastic parts, used in electrical connectors, threaded fasteners, and sensor housings.
Overmolding

Overmolding

Bonds a soft material (e.g., TPE) over a rigid substrate, ideal for ergonomic tool grips, medical device buttons, and vibration-resistant seals.
Silicone Injection Molding

Silicone Injection Molding

Utilizes LSR for high-temperature medical devices, baby bottle nipples, and flexible automotive gaskets.

Custom Injection Molding Solutions

Jinnfeng Plastic provides a one-stop solution for customized precision plastic injection molding, including free injection molding quotes, professional design for manufacturability (DFM) analysis, rapid prototyping, mass production, and process improvement suggestions. Through optimized design and strict quality management, we ensure efficient production and excellent performance of finished injection molded products. For customized solutions or more information, please feel free to contact us!

Rapid Prototyping

Rapid Prototyping

Take advantage of our swift injection molding services, capable of producing 1,000 to 100,000 units efficiently and cost-effectively. Utilizing aluminum or steel molds, we guarantee quick turnaround times, effectively tackling your production needs and minimizing your product's time-to-market.
Low Volume Production

Low Volume Production

Our low volume injection molding service enhances your production capabilities, offering the manufacture of 100,000 to 1 million units using durable steel molds. This approach guarantees both high quality and uniformity, perfectly meeting your requirements for substantial yet accurate production batches, all while upholding superior quality standards.

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Kindly provide the essential information in the form on the right to initiate the process of creating a customized quote. We assure you that we will reach out to you within 24 hours.

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Injection Molding Materials

There are over 200 common injection molding materials. It includes general-purpose plastics, engineering plastics, and high-performance materials. Modified materials are optimized from base materials by adding fibers, flame retardants, or adjusting molecular structures. Globally, there are over 18,000 commercial modified materials to meet performance requirements in different scenarios.

Injection Molding Material Selection Principles for Product Designers

  • Select material properties based on functional needs: High-temperature resistance(PC, PEEK), Impact resistance(ABS), Transparency(PC, PMMA), Lightweight(PP)
  • Consider processing parameters such as fluidity and shrinkage rate to ensure molding precision.
  • Prioritize cost-effective and recyclable materials. For regulated industries (e.g., medical, food), use certified food-grade or biodegradable materials.
Injection Molding Materials

Custom Surface Finishing for Injection Molded Parts

Beyond functional performance, the right surface finish elevates your product's aesthetics and durability. At Jinnfeng Plastic, we combine in-house standard finishing techniques with a 15+ year network of specialized suppliers to deliver textures, colors, and coatings that align with your brand vision. Whether your parts are molded in China facility, you won't be disappointed.

Surface Finishing
Read more about our Surface Treatment solution

In-House Surface Finishing Solutions

Standard Finish (SPI Class A/B)

  • Mold-Textured Surfaces: VDI 3400 standards (e.g., fine grain, leather patterns).
  • Polishing & Gloss Control: Achieve Ra 0.05μm mirror finishes or matte effects.
  • Sandblasting: Uniform roughness (Ra 1.6-3.2μm) for paint adhesion or grip enhancement.

Decorating Techniques

  • Pad Printing: Durable logos/text on curved surfaces (medical devices, tool grips).
  • Laser Engraving: Permanent markings for serial numbers, certifications (UL, ISO).

Partner-Enhanced Specialty Finishes

Functional Coatings

  • EMI/RFI Shielding: Conductive nickel coatings for electronics enclosures.
  • Anti-Fingerprint (AF) & UV-Resistant Layers: Protects consumer device surfaces.

Aesthetic Treatments

  • Electroplating: Chrome, nickel, or gold finishes for automotive trims.
  • Anodizing (Metal Inserts): Color-stable aluminum components.

Steps for Precision Plastic Injection Molding

For precision plastic injection molding, the steps include demand analysis and design confirmation, mold design and DFM (Design for Manufacturing) analysis, material selection and procurement, mold machining and manufacturing, mold assembly and debugging, mold trial and adjustment, mass production of injection molded products, as well as after-sales service and maintenance. These steps ensure that the injection-molded products meet customer requirements, are processed precisely, and optimized through mold trials, ultimately delivering high-quality, durable injection molded products that satisfy customer needs.
step 1

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

step 2

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

step 3

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

step 4

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

step 5

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

step 6

Requirement Analysis and Design Communication

Requirement analysis and design communication are crucial steps in ensuring the success of customized mold opening and injection molding. Effective communication ensures that all parties involved in the project (clients, designers, engineers, mold manufacturers, etc.) have a clear and consistent understanding of the requirements and design plan.

Our Strength of Precision Plastic Injection Molding

Jinnfeng Plastic boasts an experienced mold design team proficient in various design software and complex structural optimization, specializing in the innovative design of high-precision molds, medical molds, and hot runner molds. Through professional DFM analysis, advanced design concepts, and strict quality standards, we provide efficient and reliable customized mold solutions for automotive, medical, precision electronics, and other industries, ensuring long mold life, easy maintenance, rapid response, and efficient delivery.
Rich global trade and service experience
Rich global trade and service experience
One-stop service to customers
One-stop service to customers
Professional design ability
Professional design ability
Free sample support
Free sample support
Quality assurance Fast response
Quality assurance Fast response
Good Company Culture
Good Company Culture

Injection Molding Cases

Looking for exceptional custom molded parts? Look no further! Jinnfeng Plastic specializes in providing top-notch, tailor-made solutions. With our expertise in on-demand injection molding, we deliver high-quality prototypes and production parts to meet your unique requirements.

Quality Assurance

The Jinnfeng Plastic design, engineering, and manufacturing teams behind your project are also behind your vision, enhancing your ideas and bringing them to life. It takes years of experience to build the kind of expertise we can offer in engineering and manufacturing services which is why we have successfully serviced large customers and global industry leaders.

Thanks to our highly vetted supplier network and ISO 9001-certified Quality Management System, it’s always possible to have your parts manufactured with industry-specific certifications. Our manufacturing partner network can certify to the following standards: ISO 14001:2015, IATF 16949:2016, ISO 13485:2016 and ISO 9001:2015.

UL Certification

UL Certification

RoHS & Reach Compliant

RoHS & Reach Compliant

Industry Applications

Our areas of expertise include: precision injection molding, medical injection molding, tungsten steel part processing, and injection molding production of special plastics such as PEEK, LCP, PEI, PPS, PPSU, PFA, etc. The company is certified to ISO9001, ISO14001, ISO/IATF16949, and ISO13485 medical system standards. Over the years, with excellent quality, delivery, and service, we have earned the trust of customers both domestically and internationally, becoming a key partner for many international large-scale enterprises in various fields, including automotive engineering, electronic and electrical engineering, aerospace, medical technology, tooling fixtures, and machinery equipment manufacturing.

Consumer Electronics Precision Parts Solutions

Consumer Electronics Precision Parts Solutions

Ushering in a new era of integrated precision accessories and precision molds!
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Automotive Injection Molding Components Solution

Automotive Injection Molding Components Solution

Widely applied in automotive connectors, electronic components, mechanical parts, and other fields.
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LED Lighting

LED Lighting injection mold components Solution

We are capable of manufacturing all kinds of LED light components and their injection molds.
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Energy & Environmental

Energy & Environmental injection mold components Solution

Widely applied in Energy & Environmental connectors, electronic components, mechanical parts, and other fields.
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Computing & Media

Computing & Media injection mold components Solution

Widely applied in Computing & Media connectors, electronic components, mechanical parts, and other fields.
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Medical

Medical injection mold components Solution

Widely applied in Medical device casings, disposable consumables and other fields.
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Need High Quality Injection Molded Parts?

If you have a great idea, we can help bring it to life. We’ve done this before and enjoy becoming partners throughout product creation. From advising you through the mold sourcing process to delivering your new product to customers, we want to work with you every step of the way.
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