Indianapolis, IN
1. Global Plastics, Inc.
Address: 6739 Guion Road, Indianapolis, IN 46268
Phone: 1-(800) 783-7750 / (317) 299-2345
Website: https://www.global-plastics.com/
Founded: 1992
Employees: 201-500
Services:
Custom injection molding, blow molding, tooling and prototyping, product development, design and ideation, secondary operations including sonic welding, hot plate welding, and advanced assembly
Industries Served:
Automotive (interior/exterior and lighting), medical devices, consumer products, food and beverage packaging, custom industrial applications
Certifications: ISO 9001, ISO 13485, IATF 16949, SQF
Highlight:
A vertically integrated operation with 70+ injection molding presses ranging from 40 to 1000 tons. Their in-house engineering, tooling, and production departments operate under one roof, allowing faster turnaround than competitors who rely on outsourced services.
2. Burco Molding, Inc.
Address: 15015 Herriman Boulevard, Noblesville, IN 46060
Phone: (317) 773-5699 / Toll Free: (888) 883-6656
Website: https://www.burco-molding.com/
Founded: 1970
Facility: Climate-controlled plant, 24-hour operation
Services:
Plastic injection molding, design and engineering, machine shop and tool room services, fast prototyping, secondary operations
Industries Served:
Consumer products, industrial manufacturing, commercial applications
Highlight:
Over 50 years of experience with 20+ injection molding presses ranging from 60 to 950 tons. Their full-service operation runs 24 hours a day, and they maintain complete control from initial design through finished product, serving notable clients including Deflecto and Tetra.
3. IQ Enterprises (IQE)
Address: 8520 Allison Pointe Blvd, STE 220, Indianapolis, IN 46250
Phone: 1-(866) 585-2578
Website: https://iq-enterprises.net/
Email: info@iq-enterprises.net
Founded: 2004
Facility: US headquarters with manufacturing partner in China
Services:
Custom plastic injection molding, plastic injection mold design and fabrication, secondary operations (painting, printing, ultrasonic welding, machining, assembly), plastic extrusion, engineering services including CAD model development and stress analysis
Industries Served:
Consumer electronics (TV cabinets, mobile phone covers), HVAC (air conditioner parts), medical devices, pool and spa equipment
Certifications: ISO 9001:2015
Highlight:
Operates a hybrid US-China model that combines Indianapolis-based project management and engineering with cost-effective overseas production. Bilingual engineers handle all communication and quality control, with machines ranging from 80 to 1600 tons. They offer complete project management from design concept to dock delivery.
San Francisco, CA (Bay Area)
1. Westec Plastics Corporation
Address: 6757 Las Positas Road, Livermore, CA 94551
Phone: (925) 454-3400
Website: https://www.westecplastics.com/
Founded: 1969
Facility: Includes clean room capabilities
Services:
Plastic injection molding, mold building, 3D printed injection mold tooling, clean room manufacturing, secondary operations
Industries Served:
Medical devices, aerospace and defense, consumer products, electronics, sports and recreation, baby care products, veterinary applications
Certifications: ISO 13485:2016
Highlight:
Over 55 years serving the Bay Area with specialized expertise in medical injection molding. Their ISO 13485 certification and clean room facilities make them a preferred partner for medical device companies requiring FDA-compliant manufacturing. Known for providing turnkey capabilities from concept to completion.
2. CROWN Manufacturing Company, Inc.
Address: 37625 Sycamore Street, Newark, CA 94560
Phone: +1 (510) 742-8800
Website: https://crown-plastics.com/
Email: info@crown-plastics.com
Founded: 1959
Facility: In-house tool room with CNC and EDM equipment
Services:
Plastic injection molding, ultrasonic welding and bonding, pad printing, circuit board assembly, drilling, tapping and insertion, shielding and painting, assembly and packaging, just-in-time delivery
Industries Served:
Electronics, consumer products, industrial applications
Certifications: ISO 9001:2015
Highlight:
A 65-year Bay Area institution specializing in short to moderate production runs with just-in-time delivery capabilities. Their in-house tool room with CNC and EDM support equipment allows them to handle the entire mold-making process internally, from initial design consultation to final part production.
3. Kinetic Molding
Address: 380 Carrol Court, Suite D, Brentwood, CA 94513
Phone: (408) 579-9167 / (408) 831-1663
Website: https://www.kineticmolding.com/
Email: info@kineticmolding.com
Facility: Equipped with Nissei Hybrid machines (40-127 ton range)
Services:
Custom injection molding, R&D and prototyping, sub-assembly, overmolding, insert molding, multiple core pull and unscrewing molds, two/three plate molding, neodymium magnet installation, secondary operations
Industries Served:
Medical devices, aerospace, automotive, consumer products
Highlight:
Specialists in small, complex parts requiring tight-tolerance specifications. Their team brings 27+ years of industry experience with particular expertise in overmolding and scientific molding processes. New Hybrid Nissei machines are optimized for precision work, and they maintain a strong commitment to mold maintenance, reducing costly repairs that are often overlooked in the industry.
Seattle, WA (Metro Area)
1. SEA-LECT Plastics Corporation
Address: 3420 Smith Avenue, Everett, WA 98201
Phone: (425) 339-0288
Website: https://sealectplastics.com/
Email: info@sealectplastics.com
Founded: 1995
Employees: 11-50
Facility: 16 multifunction machines, 33 to 600 tons
Services:
Injection molding, tool and die manufacturing, design and engineering support, rapid prototyping, 3D printing, turnkey production, injection mold recovery, assembly, ultrasonic welding, heat staking, pad printing and hot stamping, production machining, mold flow analysis, warehousing and distribution
Industries Served:
Industrial, marine, outdoor recreation, recreational vehicles, consumer goods, military, renewable energy, medical devices
Highlight:
A sister company of SEA-DOG Corporation (established 1920), bringing over 36 years of plastic injection molding expertise. They are pioneers in green injection molding, using recycled materials for many projects. Their turnkey, one-stop approach spans from part design through warehousing and distribution, making them a comprehensive manufacturing partner in the Pacific Northwest.
2. Innovative Industries NW
Address: 16 S Idaho Street, Seattle, WA 98134
Phone: (206) 652-9110
Website: https://innovativenw.com/
Email: sales@innovativeindustriesnw.com
Founded: 1947 (under new ownership)
Employees: Approximately 15
Services:
Custom plastic injection molding, pre-production design services, prototyping, post-production assembly and machining, product packaging, mold maintenance, modifications, and repair
Industries Served:
Aerospace (primary), marine, general manufacturing
Certifications: AS9100:2016
Highlight:
A Pacific Northwest institution since 1947, now operating under new ownership while maintaining its reputation for aerospace-grade quality. Their AS9100 certification reflects gold standard manufacturing processes, and they hold a gold standard rating with the aerospace industry. All manufacturing is done in the USA, protecting intellectual property and avoiding overseas delays.
3. H&H Molds, Inc.
Note: Only 2 verified plastic injection molding companies were found within 50 miles of Seattle. H&H Molds is included as a regional option serving the Pacific Northwest market.
Address: 119 S. Adams Road, Spokane Valley, WA 99216 (approximately 280 miles east of Seattle)
Phone: (509) 924-3770
Website: https://hhmoldsinc.com/
Founded: 1952
Facility: Full mold making and injection molding facility
Services:
Custom injection molding, mold making, engineering, machining, quality assurance, post-molding operations, mold repair and maintenance
Industries Served:
Manufacturing, life sciences, technology, consumer goods, agribusiness
Certifications: ISO 9001
Highlight:
H&H Molds is located in Spokane Valley (Eastern Washington), serving clients throughout the Pacific Northwest including the Seattle metro area. Over three generations since 1952, they have evolved into one of the largest professional mold making and injection molding companies in the region. They specialize in low-volume, tight-tolerance molding of engineering and commodity-grade thermoplastic resins, with all work anchored on US soil under American standards and oversight.
Notes
Research across these three metropolitan areas reveals distinct regional strengths in plastic injection molding. Indianapolis leverages its central US location and automotive heritage, with Global Plastics offering 70+ presses and multiple quality certifications serving the automotive supply chain. The San Francisco Bay Area shows concentration in medical device and electronics manufacturing, with Westec Plastics maintaining ISO 13485 certification for medical injection molding since 1969.
For Seattle, only 2 verified plastic injection molding companies were found within a 50-mile radius: SEA-LECT Plastics in Everett (30 miles north) and Innovative Industries NW in Seattle proper. H&H Molds in Spokane Valley (280 miles east) was included as a regional Pacific Northwest option. Other Washington state injection molders are concentrated in the Vancouver/Portland metro area (165+ miles south) and Yakima (140 miles southeast).
All nine companies verified offer custom injection molding as their core service. Six of the nine maintain ISO certifications. Founded dates range from 1947 (Innovative Industries NW) to 2004 (IQ Enterprises), demonstrating both established legacy operations and newer market entrants. Companies were selected based on verified website presence, confirmed contact information, and clear evidence of plastic injection molding as a primary business focus.
Research conducted January 2026. Verify all information directly with companies before business engagement.