Injection Molding Contract Manufacturing Types and What They Mean

Getting a high quality injection molded product from China onto the market quickly requires hiring a contract manufacturer. You must first understand the types of contract manufacturing available before you can find the right China partner.

In terms of injection molding contract manufacturing and how to find a trustworthy China injection molding manufacturer, there is a lack of consensus. Often, business owners feel overwhelmed and confused by the many options available to them.

injection molding

Contract Manufacturing

You shouldn’t have to stress out when it comes to finding a China injection molding manufacturer. Throughout this guide, we’ll address some common misconceptions about the different types of contract manufacturing. In addition, we will provide you with all the information you need to make an informed decision.

Contract Manufacturing: 3 Types You Should Know

Although every manufacturer offers different services, contract manufacturing can be classified in three ways:

A contract manufacturing agreement can take a variety of forms. A injection molding contract for manufacturing a single plastic part or component, a labor or service subcontracting agreement, or an end-to-end service agreement fall under this category.

The services, tools, and materials used by two contract manufacturers could be very different, even if they both manufacture private label products.

Design of components (7 days)

Topworks can optimize your design for cost savings or ensure compatibility with Asian processes by optimizing your design before tooling.
Clients are welcome
to supply 3D files

Parts Prototyping (if necessary)(2 -3 days)

Topworks can utilize Computer Numerical Control (CNC) to produce a machined prototype or 3D printing that you can see and feel to validate the design of your part.
 Client Side
Or Topworks side

Tool Design(3-7 days)

During this stage, your Tooling Information Worksheet is used to design the tool.
Client Side Or
Topworks side

Tool Check and Mold Flow Analysis(1-2 days)

The accuracy of the tool design is validated.
Topworks side or client side

Tool Fabrication(3-8 weeks,it depends)

The tool is precisely fabricated according to the validated design using Computer Numerical Control (CNC), and Electrical Discharge Machining (EDM) technologies)…
Topworks side

First Shots To Client(T1,3-4 days)

The first test shots will be sent via courier soon after the injection molds are made. Once sent, these usually arrive in 2-5 days.
Topworks side

Tool Modifications and
Texturing (3-7 days,it depends)

At this point, Topworks makes any changes to the tool that is necessary to bring it into compliance with the approved specifications. Topworks makes any changes that are necessary (specifically excluding design changes, which are always charged for) free of charge.
In this stage, the texturing process is done, which is usually the last step before mass production.
Topworks side

Mass Production Run or Export 

In this stage, the tool is handed over to the customer or ready for injection molding.
Topworks side

A good quality product and a quick product launch are two important factors to consider in this category.

Various industries are supported by external manufacturers. Choose a manufacturer that understands your industry’s market and regulations, as well as the needs of your customers.

You’ll find the most reliable China injection molding partner for your business when you assess a contractor manufacturer according to each of these categories. According to your product, industry, and business structure, we’ve outlined the criteria you should look for in each category below.

1: china injection molding Manufacturing Contract Types

China injection molding manufacturers provide specific services under contract manufacturing agreements. Contract manufacturing agreements come in a number of different forms, but the four most common are:

Private label manufacturing:

According to your specifications, the contract injection moldingmanufacturer ships a finished product to your store or inventory warehouse. Multiple injection molded components are usually assembled by the manufacturer before shipping. If you want to manufacture products quickly, this is the best choice.

Individual component manufacturing:

In contract manufacturing, a single component or part of a complex product is produced by the China injection molding contractor. You are responsible for assembling the final product once the parts have been manufactured. For businesses that handle some manufacturing aspects in-house, but lack the expertise or resources to produce certain components, this is the best option. It’s a good idea to hire a metalworking contract manufacturer if you need a complex metal part.

Labor or service subcontracting:

As with individual component manufacturing, a China injection molding manufacturer handles only one aspect of the process instead of providing full services. When a general contractor’s in-house resources or staff cannot handle certain tasks, a specialist subcontractor is hired. You may be able to manufacture a part faster or for a lower price by outsourcing a part if you have an especially complex product.

End-to-end manufacturing:

Private label manufacturing has almost identical characteristics, but there is one significant difference: the manufacturer provides more feedback on the product design. Your product doesn’t have to look or work exactly how you want it to. Rather than optimizing the design for manufacturing, the manufacturer streamlines and optimizes every aspect for cost effectiveness. Businesses that want to quickly produce high-quality products at the lowest cost should choose this solution. From design to assembly to shipping, everything is taken care of for you.

You should consider an end-to-end agreement if you have only limited experience with manufacturing. You will receive a detailed estimate from the manufacturer before signing the contract so you know exactly what to expect.

2: Materials, tools, and services used in injection molding manufacturing

When deciding what type of contract manufacturing agreement to sign, consider the in-house capabilities of prospective China injection molding manufacturers. An expert, tool, or material does not have to be on hand at all times for a manufacturer to be successful. You simply need to make sure the manufacturer has all the resources, tools, and knowledge necessary to produce your product at the highest level. By doing so, significant delays and unexpected costs can be avoided. Manufacturing tools include the following advanced and versatile ones:

Software for CAD
CNC machining
3D printers
Die casting

The use of these tools not only facilitates the production of high-quality products, but also allows China injection molding manufacturers to design or manufacture their products more efficiently, cost-effectively, and with less waste.

Materials are also significant. The limited selection of materials available to some manufacturers limits your manufacturing options significantly. Choose a manufacturer with experience working with a variety of materials, such as:

  • A variety of silicones, such as elastomers, gels, and room-temperature vulcanization (RTV);
  • The polyurethane group of materials includes elastomers, rigid foams, gels, and viscoelastic foams;
  • Metals and woods of different types;
  • Plus much more.

To produce and test your product before it hits the market, leading manufacturers also hire a diverse and knowledgeable staff of engineers, equipment operators, metalworkers, and woodworkers. You will be able to reduce costs and get your products to market faster with this combination of skilled labor, diverse raw materials, and advanced manufacturing tools. Make sure the manufacturer offers a variety of contract manufacturing options.

3: Industries supported by china injection molding manufacturers

A China injection molding contract manufacturer can specialize in a variety of industries. It is critical to work with a manufacturer who understands your industry, even if some experienced manufacturers can produce products for multiple industries. There should be proof that the manufacturer:

The product you propose is similar to one you have designed before;
Identify your customers’ expectations;
Keep track of current industry trends, best practices, and the latest market developments;
To ensure your product complies with industry regulations, you are already familiar with them or are willing to research them in detail.
If your products require a high degree of detail or complexity, this is especially critical. The following industries are among the most demanding:

  • Telecommunications
  • Healthcare
  • Electronics

Working in any of these industries requires partnering with a manufacturer with experience in the field. Look through the portfolio of the manufacturer. Has your company contracted with them to perform contract manufacturing? A manufacturer who specializes in building parts for autonomous oceanographic vehicles might be a good choice if you’re designing a new piece of oceanography research equipment. It is also advisable to partner with a manufacturer that designs and builds medical devices and training materials if you work in the healthcare industry. Due to their knowledge of all of the strict regulations pertaining to healthcare products, they know how to deal with them.

China injection molding Manufacturers: How to Choose One

Now that you have an understanding of the three main types of contract manufacturing, you can evaluate potential China injection molding manufacturers based on this information. Reliability and a willingness to collaborate on your design are two essential qualities in a manufacturer.

Detailed contract proposals and cost estimates should be provided by a contract manufacturer from the outset. Also, they should be able to show you around their workshop and explain how your product will be manufactured, the tools they will use, and the materials they will use. As well as sharing examples of their work, they should respect their past clients’ privacy and intellectual property. The manufacturer will likely be a terrific partner for your company if they have glowing client testimonials from others in your field.

Collaboration, however, is one of the most important characteristics of a great China injection molding contract manufacturer. Creating something you can both be proud of and that contributes something meaningful to society comes about when you work with a contract manufacturer that values quality as much as you do.