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Founded in 1982 by Mark G. Sellers, MGS continues to embody its founder’s entrepreneurial spirit as a leading global provider of optimized manufacturing solutions for high-precision plastics products, across multiple industries. Here’s a look at how MGS has risen to become the ideal manufacturing partner to meet your greatest challenges and make your programs successful.

MGS Through the Years

  1. MGS Timeline – 1982

    1982 – MGS Begins

    Mark Sellers starts his own business, Moldmakers Incorporated. Leading a small group of similarly dedicated and skilled toolmakers, he quickly establishes a reputation for providing customers with the timely delivery of the highest quality plastic injection molds.

  2. MGS Timeline – 1988

    1988 – Time for a New Facility

    Moving into a new 20,000-square-foot tooling facility in Menomonee Falls, Wisconsin, MGS adds a dedicated engineering and design team to provide customers with specialized solutions and design-for-manufacturability, consultation and mold design.

  3. MGS Timeline – 1990

    1990 – Growth Continues

    Within just two years, the company outgrows its space and a 12,000-square-foot addition is made to the existing facility to accommodate additional equipment and personnel – marking the beginning of a significant growth phase for MGS.

  4. MGS Timeline – 1992

    1992 – Addition of Specialized Divisions

    MGS celebrates ten years in business and incorporates two new divisions that provide specialized services to meet the needs of customers: Prototypes, Molds & Design (PMD) and a mold polishing team.

  5. MGS Timeline – 1994

    1994 – Focus on Advanced Services

    Meeting specialized manufacturing and development services demands, Statistical Plastics Corporation (SPC) invests in injection presses to provide developmental testing, molding and inspection services. Programmers are added for specialized CAD capabilities.

  6. MGS Timeline – 1996

    1996 – Expansion to Germantown Corporate HQ

    A new 65,000-square-foot state-of-the-art facility is built to provide engineering, mold and part design, tooling, project management and plastics processing. The MGS Tech Center becomes the corporate headquarters and houses personnel and resources to support administrative needs.

  7. MGS Timeline – 1997

    1997 – The Total Manufacturing Solution

    New 80,000-square-foot structure houses plastic manufacturing operations and additional mold building capabilities. TecStar establishes itself as a full-service manufacturing company – offering a complete range of engineering and production resources.

  8. MGS Timeline – 1999

    1999 – Multishot Mania

    Universal Multishot Systems™ begins operations, servicing the multiple material manufacturing equipment needs of the MGS molding facility. Based on increasing customer demand for portable injection units, UMS quickly grows to occupy its own dedicated facility.

  9. MGS Timeline – 2000

    2000 – Continued Growth

    A second production molding facility in Libertyville, Illinois provides increased manufacturing capabilities, including blow molding. The 30,000-square-foot facility also houses single and multishot injection presses along with assemblies and secondary operations.

  10. MGS Timeline – 2002

    2002 – 20th Anniversary and Expansion

    The new addition more than doubles the current facility size to over 180,000 square feet and increases production capacity, providing the ability to better streamline material and inventory control. The company celebrates its historic anniversary.

  11. MGS Timeline – 2006

    2006 – Investment in the Healthcare Market

    Acquiring All West Plastics in Antioch, Illinois allows MGS to serve the needs of the Northern Illinois “medical corridor,” providing cleanroom injection molding and value-added services. MGS invigorates the Antioch plant with additional injection molding machines and multishot manufacturing technologies.

  12. MGS Timeline – 2008

    2008 – Expanding to Mexico

    Acquiring an existing injection molding facility in Chihuahua, Mexico, MGS increases the facility’s molding capacity by adding 770-ton injection molding machines, multishot technologies and continuous shuttle blow mold capabilities. TecStar de Mexico serves the automotive, electronics and consumer markets.

  13. MGS Timeline – 2010

    2010 – New Cleanroom, Antioch Name Change

    Building a 7,000-square-foot cleanroom for additional molding and assembly capacity enables MGS to serve the growing medical healthcare markets. The name of the All West Plastics facility is changed to MGS Mfg. Group – Antioch.

  14. MGS Timeline – 2011

    2011 – First Overseas Facility, Launch of MGS Automation

    New location in Leixlip, Ireland becomes the fifth MGS production molding plant and the first outside of North America. Meanwhile, MGS Automation expands its scope and capabilities with a move to a dedicated facility in Germantown.

  15. MGS Timeline – 2012

    2012 – 30 Years, New MGS Sampling Facility

    MGS celebrates 30 years in business with its largest sales year to date. CEO, Mark Sellers, is featured in “Milwaukee BizTimes” discussing his belief in fostering the entrepreneurial spirit in employees and the value of establishing and maintaining customer communications. MGS Sampling is officially launched.

  16. MGS Timeline – 2014

    2014 – Sixth Facility Opens, Quality Lab Built, Molding Rebranded

    MGS acquires the Hospira injection molding facility in Buffalo, NY, specializing in the production and assembly of medical components. A 5,000-square-foot, state-of-the-art Quality Lab is built inside the Germantown molding facility. The names of all molding facilities are rebranded to MGS.

  17. MGS Timeline – 2015

    2015 – Another Cleanroom, New Distribution Center

    A second cleanroom is built, housing MGS Automation equipment and servo and hybrid injection molding machines. Plus, MGS opens a 100,000-square-foot distribution center in Oak Creek, Wisconsin to provide a central location for regional inventory management and shipping and receiving needs.



    MGS acquires an additional existing injection molding facility located in Juarez, Mexico. The plant adds 500 additional employees to the MGS family and allows the company to continue its significant growth in the Mexican market.

  19. MGS Timeline - 2018


    With expanded offerings surrounding New Product Development and pre-engineering, MGS provides customers with a single source for all of their integrated manufacturing needs – from design to delivery.

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