China Plastic Injection Molding Services

ISO 9001:2015 Certified

Custom high-quality, affordable plastic parts made in China. Twenty years of experience injection molding supplier. From rapid prototyping to plastic moulding solutions, our services are in-house manufacturing, ensuring direct and efficient communication with you.

+86 139 2927 4777 (WhatsApp, Wechat)

On-Demand Injection Moulding Service

As one of the best injection molding manufacturers in China, Sungplastic can provide on-demand manufacturing services to support your product development and mass production needs. Our international team of engineers will work with you to bring your product ideas to the end market through manufacturing services such as rapid prototyping, mold manufacturing, injection molding, over-molding and insert molding, surface finishing and assembly.

Do you want to get high-quality, affordable plastic parts, rubber parts and metal parts from China? We guarantee consistent quality for prototypes and end-use parts, in-house and through our verified manufacturing partners. Throughout the entire project production process, timely, professional, effective and easy communication will always be with you.

plastic rapid prototyping

Rapid Prototyping

We offer the industry’s finest rapid prototyping services to support your new product development goals. 1-1000 Quantity, within 3 days by 3D printing, CNC machining, and other techniques.

LED Lens injection molding manufacturer

Injection Molding

Flexible production quantities from 100 to 100,000 units per order. We offer free services on every project including free part design advice, help with selecting material, and cost planning.

plastic mold factory

Tooling and Engineering

Professional injection mold manufacturing and maintenance to ensure the service life of the mold. Lead times for building molds and sending samples vary from 5 days to 5 weeks.

CNC Milling Service

CNC Machining

Low-volume manufacturing. Fast production. Suitable for kinds of metal and plastic prototypes and production parts.

sheet metal stamping manufacturing

Sheet Metal Fabrication

Use laser cutting, bending, stamping, spinning, welding, metal injection molding to produce metal parts.

Surface Finishing after plastic injection molding

Surface Finishing

Select the appropriate surface treatment to optimize the appearance and performance of the plastic and metal parts.

A Responsible Partner You Can Trust

Parts Made

Customers Served

Countries Served

Years Experience

About Sungplastic

One-Stop-Shop, Endless Possibilities
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Sung Precision Mould & Plastic Co., Ltd is an injection molding supplier for customized injection moulds and plastic parts in China. Our services are manufactured in-house, ensuring direct and efficient communication with you. Our skilled workers and automated manufacturing processes enable high-quality injection molding, mould fabrication, CNC machining and prototyping. Each process has a different purpose, from design to physical prototypes, fit and functional testing, pilot and volume production.

Our talented and passionate engineers are dedicated to optimizing your designs, saving you money and eliminating potential manufacturing issues while delivering a meaningful customer experience. Our international sales team and project engineers are proficient in English and can communicate with you without any barriers.

We will provide fast, reliable, clear, and direct communication throughout the manufacturing process. Just contact us for a free quote and analysis, we will be available online 24/7 to support your business.

The Industries We Served

As one of the best plastic mold and injection molding suppliers in China, our capabilities and expertise can be applied in many different markets, and with decades of experience, we understand the particular demands of your industry.
Electronic plastic case injection molding manufacturer in China


auto part mold car accessories mold automotive interior trim molding
household appliances casing injection molding manufacturing


LED light lenses injection molding service


Energy Market


From Technical Parts to Finished Products

Injection Molding Solutions at Sungplastic

When you need experience, we have you covered.
Sungplastic has rich manufacturing experience. In the injection molding service of plastic parts, we have always pursued effective and efficient communication, and adopted flexible and practical methods to ensure stable and long-term production. In the demand for volume production of plastic products, the most common plastic manufacturing methods are plastic injection molding, rubber molding, overmolding, and insert moulding, blow molding, extrusion, roto-moulding and compression Molding.
Please read our production cases of project customization. Hope they are helpful to you and become a bridge for our communication. If you have new project to develop, please contact us to experience our professional services. Read more case studies…

Prototyping & Plastic Molding

Support rapid prototyping, mold building and plastic injection molding services.

car water tank manufacturer

Plastic Molding and Welding

Mold making, injection molding and ultrasonic melting services.

led lens manufacturers

Transparent LED Lenses

Light distribution design, mold tooling and acrylic injection molding services.

water to go bottle manufacturer

Injection & Blow Molding

Provide product design, injection molding and blow molding services.

injection molding trail production sample

Custom Injection Mold

HASCO, DME, MISUMI Standard. Hot runner, cold runner.

precision stamping parts of RV LOCK

Stamping and Overmolding

Custom metal stamping, overmolding and assembly services.

Enabling Innovation
Through Prototyping And Low Volume Manufacturing

Rapid Prototyping Service

We offer the industry’s finest rapid prototyping services to support your new product development goals. Plastic, metal, and rubber can all be used to make prototypes. Commonly used materials for rapid prototyping: ABS, POM, PC, acrylic (transparent material), nylon, stainless steel, aluminum alloy, brass, iron, etc. It is very important to choose the right material for your design.

Low Volume Manufacturing

Low-volume manufacturing helps you to develop your market before investing in full-scale production. It can help you predict the market more accurately and make more reasonable manufacturing and production arrangements. We will maintain the consistency and product quality of prototype and batch products.

One-stop Service at Sungplastic

At Sungplastic, we understand the challenges that arise from managing multiple suppliers in the production process. Our comprehensive solution alleviates these concerns by offering a one-stop shop for all your project needs. Beyond manufacturing high-quality plastic parts, we take pride in providing a full spectrum of services, including seamless procurement of various accessories essential to your project’s success. By entrusting Sungplastic with your manufacturing and procurement requirements, you can streamline your operations and reduce the complexity of dealing with numerous suppliers.

When choosing Sungplastic, you get a professional partner throughout the entire production cycle. Our one-stop service will save you time and cost, and let the entire production process be within your sight. Timely, professional, effective and effortless communication is always with you. We will advise on the best material selection for your project and part, and plan a sound manufacturing evaluation for you. We are ready to take your product from concept or drawing to reality. If you’re ready to start your next project, contact us for an instant quote and project research.

plastic products and parts

Custom Plastic Parts

Methods: rapid prototyping, 3D printing, plastic injection molding, overmolding, insert molding, blow molding, etc.
Materials: ABS, PP, PC, PVC, PS, Nylon, HDPE, PMMA/Acrylic, PE, POM, TPE, TPU, TPR, modified plastics

Custom Rubber Parts

Methods: prototyping, 3D printing, injection molding, overmolding, insert molding, blow molding, compression Molding, transfer molding etc.
Materials: NR, PU, LSR, EPDM, SBR, NBR, silicone etc.

metal component manufacturing

Custom Metal Parts

Methods: CNC machining, metal injection molding, sheet metal stamping, metal 3D printing, die casting, Extrusion.
Materials: aluminum, brass, copper, stainless steel, steel alloy, steel mild low carbon, titanium

Why Choose Our Company

Source Factory

More than 20 years factory experience. Maintain accurate and efficient processes with you in each process communication. Reduce your risks and costs, and ultimately provide quality products and services.

Experienced Team

Carefully review all the information you provide. Discuss your unique design with you, evaluate the cost, and even help you optimize parts and make design changes through our design services.

One-stop Service

Freely custom plastic and metal parts of various materials with our full suite of machining, prototyping, molding, and assembly services. We are here to help you with every part of the production process.

On-demand Production

Low or high volume manufacturing to support you manage market or demand volatility. No minimum order volumes or amounts for our injection molding production.

China Manufacturing Solution Factory

Reliable Injection Molding Supplier

We have cooperated since 2014, and their quick response, professional advice, and good quality have made my project progress very smoothly. They are a group of serious people, worthy of my trust and dependence.

Daniel Montanes

Incredible customer service and relatively quick turnaround time. Online engineering suggestions about the projects help drive our work to be the best. They understand customers’ time is valuable and they need parts ASAP.

Grattan O'Hagan

Sungplastic is our best plastic injection molding supplier, and their quality of work speed, accuracy, and services is very satisfying. It was easy to communicate, and it gave me a sense of security because it answered my questions quickly.

Desmond Desioco

Plan Your Business Strategy with Us.

Prototypes and Parts Delivered Quickly in Four Simple Steps

Upload Project Designs

Upload your designs files & tell us important details about your project.

DFM Review + Quote

Comprehensive design for manufacturing (DFM) analysis to optimize your parts.

Confirm Order + Production

Once you accept our quote, begin working with our team to make your ideas a reality.

Receive Your Parts

Your custom parts are delivered safely to your doorstep by air or by sea.

How to custom injection molding with Sungplastic?

How soon can I get a quotation?

  • Normally, we will get back to you within 6 hours after getting your detailed drawings and requirements.
  • If projects include many different parts, we will try our best to get back asap.

What type of files does Sungplastic accept for quoting?

    In order to provide an accurate and timely quote, please try to provide complete manufacturing information.

  • We accept 3D CAD files in STL, STEP, IGES, UG files, SLDPRT, or X_T format.
  • 2D drawings in DXF, DWG, PDF with reference dimensions.
  • Product material you demand or suggested by us and the order quantity.

What is the normal process of a new project?

  • It usually begins with a drawing/sketch or similar samples.
  • We then collect the data required for the project quote and any special material requirements if you may have. After study of your material & through our interview process, we will complete your quote.
  • If the project is approved, we ask for an initial advance payment of 50% of the cost to cover material costs, and the manufacture begins.

I have no drawings, will Sungplastic make design drawings for me?

  • If you have a similar sample, you can provide it to us for reference and we will design it.
  • If it is still an idea, please tell us your ideas as much as possible, and our design team and engineering team will assist you in realizing the product design.

How does Sungplastic ensure the quality of my products?

  • Once your order is confirmed, we will perform a full Design for Manufacturing (DFM) review to point out any issues that our engineers feel may affect the quality of your products.
  • We have the ability to share the production progress with you in real-time so that we can jointly solve any problems that may be encountered in the production process and ensure the smooth completion of the project.

How do I know my design will be kept confidential?

  • We of course will sign and adhere to any non-disclosure or confidentiality agreement. We also have a strict policy within our factory that no photographs are ever allowed of a customer’s product without express permission. Ultimately never allowing any proprietary information to be disclosed to a third party.

Get a free quote and design analysis today.

We’ll reply to you within 6 working hours.
We respect your privacy.

+86 139 2927 4777 (WhatsApp, Wechat)

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