Top 11 Injection Molding Manufacturers in South Carolina 2026

J M Mold South Inc

Easley, South Carolina

J M Mold South Inc., doing business as JMMS, was founded in 1986 by David M. Bowers in Easley, South Carolina.

Mack Molding Co

Inman, South Carolina

Mack Molding was founded in 1920 and is headquartered in Arlington, Vermont, with additional facilities in East Arlington and Cavendish, Vermont, as well as Inman, South Carolina, and Statesville, North Carolina. The company operates as a vertically integrated contract manufacturer across ten locations totaling more than 1.5 million square feet of manufacturing space.

Marchel Industries

Spartanburg, South Carolina

Marchel Industries was founded in 1992 in Spartanburg, South Carolina, as an American-based precision injection molding and manufacturing company. In February 2023 the business was acquired by Plastifab, a extrusion firm, to create a complete plastics partner offering both extrusion and injection molding services.

Plastics Advanced Research

Clover, South Carolina

Plastics Advanced Research, operating as PART Inc., has been based in Clover, South Carolina since its founding in 1978. Dennis Denton established the company with a vision to provide unparalleled quality and service in plastic injection molding.

United Tool & Mold Inc

Liberty, South Carolina

United Tool & Mold Inc. was founded in 1995 in Liberty, South Carolina, with a second strategic location in Rainbow City, Alabama.

Progressive Plastics Inc

Clover, South Carolina

Progressive Plastics, Inc. operates from Clover, South Carolina, a location centrally positioned between Charlotte, North Carolina, and Greenville, South Carolina with easy access to major highways and an international airport.

Sonoco Plastics, based in Greer, South Carolina, traces its roots to 1946 when it was established as the Industrial & Specialty Plastics division of Sonoco Products Company (NYSE: SON). The company specializes in plastic injection molding, extrusion, and assembly, supported by in-house design, engineering, and quality teams.

Strategy Plastics

Williamston, South Carolina

Strategy Plastics operates a 40,000-square-foot facility in Williamston, South Carolina, roughly 25 miles from the Greenville-Spartanburg Airport. The company was acquired in June 2013 and has doubled in size since then, growing into a full-service injection molding operation.

Hi-Tech Mold & Engineering operates a technology center in Westminster, South Carolina. The company is a family-owned and operated business, though its founding year and founders are not publicly disclosed.

PDQ South

Pageland, South Carolina

PDQ South operates from Pageland, South Carolina, where it has been in business for over 42 years. The company, known as PDQ South Technologies, was built on the principles of Pride, Determination, and Quality, though its founding year and original founders are not publicly documented.