Our Company

Stone Plastics is a privately held, state of the art, injection molding and manufacturing company boasting a 165,000 square foot facility. We are ISO 9001:2015 certified with capability ranging from custom injection molding, 2-shot molding, inserting molding, pad printing, sonic welding and assembly services. We are uniquely vertically integrated with all services to handle our customer’s need for part feasibility, tool design/build management, equipment and automation design build, and in-house measurement of the finished part. We pride ourselves in quality every step of the way. We would love to partner with you, as together, we mold a better future.


Our mission is to deliver the customer quality parts, on time and at a competitive price.  It is important to us to not just sell products, but also sell solutions. We believe in creating an experience and a culture with our customers.


We started in 1999 with three guys in an old warehouse with one injection molding machine.  In the years since, we have grown to a company with 200 employees, in a 165,000 square foot facility with over 75 molding machines.  The same three guys who started our journey are all still an integral part of our Stone Plastics family.  Their same passion for innovation and customer service exists today as it did when the company first started.


Stone Plastics is certified to ISO 9001:2015 Quality Standards. (Click here for our Certificate of Registration)

Quality Policy Statement: We commit to continually improve our ability to provide superior Quality, Delivery and Price to our customers through innovative processes and standards.

Quality Scope: Manufacture of plastic injection molded products including decorating and assembly processes.  The design and development requirements of ISO 9001:2015 have been excluded because the organization does not perform any design of its products.  All product requirements and specifications are received from customers.

Supplier Requirements:
Click here for our Supplier Requirements Manual
Click here to complete our Supplier Self-Assessment.


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