Greenville, SC
1. Strategy Plastics
Located in Williamston, SC (approximately 25 miles from Greenville)
Address: 19 Strategy Lane, Williamston, SC 29697
Phone: (864) 847-4165
Website: https://www.strategyplastics.com/
Facility: 40,000 square feet, 17 injection molding machines (35 to 720 ton)
Services:
Full-service plastic injection molding (single and multi-shot), custom molding, engineering, project management, parts assembly, testing, dimensional analysis, domestic and offshore tooling
Industries Served:
Automotive, appliance, consumer goods
Certifications: ISO 9001:2015 (Intertek certified)
Highlight:
Full-service plastic injection molding facility strategically located 25 miles from the Greenville-Spartanburg International Airport. Strategy Plastics operates 17 injection molding machines ranging from 35 to 720 tons, providing both single and multi-shot molding capabilities. Their 40,000 square foot facility supports complete project lifecycle management from engineering through testing and dimensional analysis. ISO 9001:2015 certification demonstrates their commitment to quality in serving automotive and appliance OEMs.
2. JATCO South Carolina
Address: 611 Main Street, Greenwood, SC 29646
Phone: (864) 223-6681
Website: https://www.jatco.com/
Services:
Plastic injection molding, design and engineering, in-house tooling (mold construction, maintenance, modifications), assembly, secondary operations
Industries Served:
Automotive, consumer products, industrial, electronics
Highlight:
JATCO’s South Carolina plant provides full injection molding services for East Coast customers, complementing their California headquarters. The Greenwood facility features experienced in-house engineers and industrial design specialists who can develop new products from concept through production. Their in-house tooling capabilities support mold construction, maintenance, and modifications, reducing lead times and enabling rapid response to design changes. JATCO’s engineering team offers design consultation to help customers save time and money while optimizing manufacturability.
3. Hartman Enterprises
Address: 106 Industrial Drive, Williamston, SC 29697
Phone: (864) 847-9476
Website: https://www.hartman-ent.com/
Founded: 1976
Services:
Plastic injection molding (60 to 787 ton presses), injection mold making, mold design, tool production, mold repair, part design assistance
Industries Served:
General manufacturing, industrial products, consumer goods
Highlight:
Family-owned and operated business founded in 1976 with nearly 50 years of injection molding experience in the South Carolina Upstate region. Hartman Enterprises offers comprehensive in-house services covering all aspects of injection molded plastic parts, from part design and mold design through tool production and molding. Their tool room capabilities include building simple prototype molds to multi-cavity hot runner production molds. All parts are manufactured in the USA with a focus on competitive pricing, dependable delivery, and quality craftsmanship.
Spartanburg, SC
1. Marchel Industries Inc.
Address: 100 South West Drive, Spartanburg, SC 29303
Phone: (864) 574-6318
Website: https://marchelindustries.com/
Facility: 35,000 square feet (climate controlled)
Services:
Full-service plastic injection molding (20 to 400 ton presses), precision CNC machining, EDM machining, plastic design, custom molding, reverse engineering, prototyping, parts assembly, testing, dimensional analysis
Industries Served:
OEM, medical, government, military, industrial
Certifications: ISO 9001:2015
Highlight:
Full-service plastic injection molding and precision machining facility operating from a 35,000 square foot climate-controlled facility in Spartanburg. Marchel Industries combines injection molding capabilities (20 to 400 ton presses) with CNC and EDM machining services, enabling complete project execution from design through final assembly. ISO 9001:2015 certification supports their medical, government, and military customer base. Their reverse engineering and prototyping services allow customers to bring existing products or new concepts through complete development cycles.
2. Mack Molding – Inman Facility
Address: 130 Mack Drive, Inman, SC 29349
Phone: (864) 472-2166
Website: https://www.mack.com/
Services:
Custom injection molding, contract manufacturing, full-service product realization (design, engineering, prototyping, production, assembly)
Industries Served:
Medical, industrial, transportation, robotics, energy and utility
Highlight:
Mack Molding’s Inman facility serves as their Southeast U.S. manufacturing hub, providing strong access to customers throughout Georgia, Tennessee, Virginia, Florida, and Alabama. With roots in custom injection molding, Mack Molding has evolved into a leading contract manufacturing provider offering complete product realization services from design through production. The Inman location in Spartanburg County neighbors Greenville, one of the fastest-growing cities in the United States, and benefits from the area’s skilled workforce and manufacturing infrastructure.
3. PSI Molded Plastics – PSI South
Address: 1200 Airport Road, Marion, SC 29571
Phone: (843) 423-0560
Website: https://www.psimp.com/
Founded: 1994 (Marion facility)
Facility: 95,000 square feet total (two South Carolina facilities)
Services:
Custom injection molding (180 to 1,500 ton presses), structural foam molding, gas assist molding, post-mold finishing, value-add assembly, painting, EMI shielding, applied graphics, printing
Industries Served:
Automotive, industrial, consumer products
Certifications: IATF 16949 (automotive quality)
Highlight:
PSI South operates two South Carolina facilities totaling 95,000 square feet of manufacturing, assembly, storage, and distribution space. The Marion facility opened in 1994 with subsequent expansions, featuring injection presses ranging from 180 to 1,500 tons for medium-volume molding. PSI specializes in structural foam molding (producing parts up to 25 lbs with high strength-to-weight performance) and gas assist molding (creating lightweight hollow structures with increased strength). IATF 16949 certification qualifies them for automotive industry supply chains. Excellent proximity to interstates, airports, and water ports supports efficient distribution.
Notes
South Carolina’s Upstate region (Greenville-Spartanburg corridor) has emerged as a significant manufacturing hub, attracting automotive OEMs and their suppliers due to favorable business climate, skilled workforce availability, and strategic logistics positioning. BMW’s Spartanburg plant and numerous automotive suppliers have created strong demand for plastic injection molding services in the region.
Companies in the area demonstrate particular strength in automotive-certified manufacturing, with IATF 16949 and ISO 9001 certifications common among local injection molders. The presence of contract manufacturers like Mack Molding alongside specialized injection molders creates a diverse supplier base capable of supporting projects from prototyping through high-volume production.
Marion, SC (PSI South location) sits approximately 150 miles east of Spartanburg but serves the broader South Carolina market with large-tonnage and specialty molding capabilities including structural foam and gas assist technologies. The geographic distribution of injection molding facilities across the state provides manufacturers with multiple sourcing options.
Research conducted January 2026. Verify all information directly with companies before business engagement.