Top 8 Custom Plastic Injection Molders

Custom Plastic Injection molding is now a major trend in molding industries today. These molds are used to manufacture different products that are applicable in industries like automobile, food, medical, textile, agriculture, etc. They enhance large-volume production.

However, due to the increase in demand for high-precision and quality plastic molds across many industries, there has been a sudden expansion in the plastic mold market. Many plastic mold consumers are now skeptical about which among the numerous injection molding companies in the market can satisfactorily meet their needs without downsides.

Consequently, this article below will explore the top 8 custom plastic injection molders that can meet your desired requirements. The list is expected to guide you in making an informed decision while you choose your preferred custom plastic molding company.

List of 8 Custom Plastic Injection Molders

After in-depth and detailed research, we have outlined below, a list of the top 8 custom plastic molding manufacturers in the world. This list was collated based on high-quality guarantees, after-sale services, expertise, as well as the products and services they offer. 

1. Seaskymedical

plastic medical mold method

Type of Business: Custom Plastic Injection Molding C

Headquarters: Shenzhen City, Guangdong Province, China.

Year Founded: 2008

Certifications: ISO10993, ISO 13485:2016, ISO 8 Classroom, CMA, etc

With over a decade experience in the plastic injection molding industry, Seaskymedical has applied advanced molding technology in supplying authentic and durable plastic molds across many industries. Being one of the leading custom plastic molding manufacturers and medical injection molders, they offer maximum quality.

With their technical and all-inclusive support at all stages of manufacturing, including product development, mold design, and material selection, their molds come out durable and tough. This unique characteristic has distinguished them as the first choice for many clients in the global market.

Using its cleanroom injection molding and 10 cutting-edge machines, Seaskymedical had proven themselves worthy as an efficient and capable custom plastic molding company. You can rely on them for your first class plastic molds. 

Products and Services 

  • Mold design 
  • Mold tooling manufacturing
  • Material selection
  • Cleanroom Injection molding 
  • Plastic injection molding
  • Custom injection molding service

2. Plastek Group

Plastek Group Logo
Source: Plastek Group

Type of Business: Plastic Injection Molder

Headquarters: Erie, Pennsylvania 

Year Founded: 1956

Certifications: ISO 9001:2015, ISO 14001:2015, FSSC 22000:2018, etc.

This is a world-class custom plastic injection molder established in 1956. Being a renowned producer and supplier of plastic molds, they are a major distributor to many industries like home care, food and beverages, cosmetics, and pharmaceuticals, amongst others. Product and package development, mold design, injection blow, assembly and decorating are also among their specialties.

Since its inception, this custom plastic molding company has grown tremendously in the global market and has become a major distributor across many countries like the US, UK, Brazil and Mexico. If you need durable plastic mold innovation and ideas, then you have found the right custom plastic molding manufacturer.

Products and Services 

  • Jar Caps
  • Plastic Mold

3. Jones Plastic and Engineering 

Jones Plastic and Engineering Logo
Source: Jones Plastic and Engineering

Type of Business: Plastic Injection Molder

Headquarters: Apodaca, Mexico.

Year Founded: 1961

Certifications: IATF16949, ISO9001, etc

This is one of the prominent custom plastic molding manufacturers in the market. Owing to the commitment and hard work of their trained engineers, they make use of injection molding machines that are in usage in their molding facilities in North America, Europe, Asia and many more.

Asides their molding expertise, Jones Plastic is also one of the prominent medical component manufacturers, and custom plastic injection molders, who is well-known for its capability to help clients get their products in the market with ease. You can bet on them for your superior plastic molds.

Products and Services 

  • Tooling 
  • Assembly and Testing
  • Customization 
  • Painting and Hydrographics
  • Mold Labeling

4. MMI Engineered Solutions 

MMI Engineered Solutions Logo
Source: MMI Engineered Solutions

Type of Business: Plastic Injection Molder

Headquarters: Michigan, USA.

Year Founded: 1983

Certifications: IATF16949, ISO14001, etc

Formerly known as Molded Materials Inc., this custom injection molding company was formed in 1983 and is situated in Saline, Michigan. With about 40 years of experience in providing custom plastic mold solutions, their services have remained outstanding in the target market. It begins with the collective efforts of their trained workers and manufacturing technicians to redefine possibilities to satisfy clients’ diverse needs. 

Providing one-stop solutions for advanced engineered resins, MMI Engineered Solutions support manufacturing engineers in developing innovative solutions for clients.

Products and Services 

  • Tool Design
  • CAE analysis 
  • Construction 
  • Mold design and analysis 

5. Minglida Technology Co. LTD

Minglida Technology Co. LTD Logo
Source: Minglida Technology Co.LTD

Type of Business: Plastic Injection Molder

Headquarters: Guangdong Province, China.

Year Founded: 2014

Certifications: ES18031

Established in 2014, Minglida is now a member of the China Die Casting and Injection Molding Association. They are a leading custom plastic injection molder that also offers plastic injection molding services, die casting, CNC machining, aluminum extrusion, and many more.

Minglida has over a decade of experience in plastic mold design, injection molding, and quality control of plastic mold products. In an aim to meet their clients’ needs, they are equipped with high-speed precision CNC machine center, CNC lathe spark machines, three-dimensional elements, and so on. These sophisticated technological innovations have given them an edge over other custom plastic molding manufacturers in the market.

Products and Services 

  • Dome Camera
  • Bullet Camera
  • Antenna
  • Wave Filter
  • Photocopier 
  • Printer 

6. Decatur Mold

Decatur Mold Logo
Source: Decatur Mold 

Type of Business: Plastic Injection Molder

Headquarters: Indiana, USA.

Year Founded: 1966

Certifications: ITAR, etc

Decatur Mold Tool and Engineering is a leading custom plastic injection molding manufacturer in the market today. Being a specialist in producing injection molds, they have received national recognition at the Women’s Business Enterprise National Council (WBENC).

Following over 55 years of industry experience, this custom plastic molding company has sustained its reputation by delivering quality products to their clients. However, in the aim to meet and satisfy consumers’ needs, Decatur Mold has added five new machines, including five-axis machining, and electrical discharge machining in order to stand out in the market.

Products and Services 

  • Design Work
  • Prototype and Production Mold Building
  • Custom Machining 
  • Sample Parts
  • Stamping Dies

7. Panon Plastic Inc.

Panon Plastic Inc. Logo
Source: Panon Plastic Inc.

Type of Business: Plastic Injection Molder

Headquarters: Mississauga, Canada.

Year Founded: 1994

Certifications: ISO 9001:2000, etc

Panon Plastic is a custom plastic injection molder that is well known for serving the electronic and automotive industries by providing expert and technical advice to meet their molding needs. While rendering great services, they ensure their consumers get an optimized time to market and get a quality product while still reducing costs.

They are diversified and experienced in the field of injection molding and mold making for any type of industry. This custom injection mold company has maintained their reputations for superiority and cost-effectiveness by equipping their clients with confidence, reliability, and just-in-time delivery.

Products and Services 

  • Mould Making
  • Injection Moulding 
  • Machining 
  • Hose Adaptor
  • Face Guard

8. Kemflo Canada Inc.

Kemflo Canada Inc. Logo
Source: Kemflo Canada Inc.

Type of Business: Plastic Injection Molder

Headquarters: Richmond Hill, Canada.

Year Founded: 1988

Certifications: ISO 9001

This custom injection mold company was established in 1988 and has built a strong reputation for designing and manufacturing durable injection molds. With over 30 years of experience in this industry, Kemflo has provided clients with value added services in quality and on-time delivery. 

Kemflo’s mission is to exceed clients expectations both in durability and delivery through their continued technological improvements and good customer interactions.

Products and Services 

  • Mold Design/Making
  • Product Design
  • Prototyping 
  • Agriculture Products
  • Pressure PVC

How to Choose the Right Custom Plastic Injection Molders

Having listed out all the trustworthy and competent custom plastic injection molders above, there are still some other things to consider when choosing your durable molds. 

  • Reliability 

It is important you validate how reliable your custom injection molding company is before you place your order for your plastic parts manufacturing. To do this, you can consider running a D&B report in order to gain access to the company’s creditworthiness. Asides from this, knowing the duration of the experience of the custom plastic molding manufacturer in the industry also helps determine future productivity.

  • Durability

Durability is one cogent factor that must not be undermined while choosing your preferred custom plastic molding company. To verify the durability of the product of your plastic mold manufacturer, you can check for the quality test results of their fixtures or ask for a video proof to further evaluate the product’s quality. 

  • After Sales Service 

You should also put into consideration the after-sales service of your molding manufacturer. The custom injection molding company is expected to offer warranties and good customer service even after your product gets delivered. Help you maintain previous mold toolings.

  • Turnaround Time

Your custom plastic molding manufacturer should deliver your bulk order within the agreed time. To know this, you can simply ask for a sample product like the medical injection molding parts.


If you are on the lookout for a reliable and competent custom plastic injection molder, the above list is available to ease your search. They are certified custom plastic molding manufacturers that are capable of meeting your needs. On top of the list is Seaskymedical. The company stands out in the market for producing and supplying first-class molds. You can reach them for your bulk orders.

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