What Tongrun International does

Tongrun International is a privately held, vertically integrated contract manufacturer headquartered in Bonham, Texas, operating a tri-continent manufacturing footprint in the United States, China (Changshu), and Thailand (Rayong). Founded in 1952, the company maintains more than 7 million square feet of manufacturing space and a workforce of approximately 3,500 employees, including 600 engineers and technicians. Its service portfolio spans seven core capabilities: sheet metal fabrication, extrusion and die-casting, assembly and integration, injection molding and vacuum forming, CNC machining, iron and ductile casting, and integrated logistics/KANBAN. A proprietary methodology branded 'True DFM' (Design for Manufacturability) wraps engineering, design improvement, process optimization and packaging design around the manufacturing services.

The company serves B2B customers across industrial manufacturing, medical devices, automotive aftermarket, telecommunications, commercial retail, oil and gas, and power distribution, producing enclosures, chassis, cabinets, kiosks, POS terminals, switch gears, medical refrigerators, and other precision metal and assembled goods. Tongrun holds ISO 9001:2015 and ISO 14001:2015 certifications (issued by Amtivo USA Inc.) plus 3C and UL product safety certifications, and operates a 175,000 sq ft US warehouse for KANBAN inventory, 3PL, freight and kitting services. Pricing is quote-based per project via a 'Request a Quote' flow, with sales executed through named account managers (Scott Carnegie, Star Brock III, Randy Cummings) and the corporate website (tongruninternational.com). Leadership is led by President Brandt Strieby.

In March 2026 Tongrun was acquired by Platinum Equity's Small Cap division — one of three platform acquisitions completed within a two-week window alongside Czarnowski Collective and Norton Packaging, funded by Platinum Equity Small Cap Fund II's $2.28 billion in commitments. Tongrun continues operating as a portfolio company under Platinum Equity ownership, which intends to apply its operational M&A&O strategy to drive consolidation within the lower-middle-market contract manufacturing space. The acquisition implies a probable PE-led growth path involving both organic capability extension and bolt-on M&A across the US/Asia manufacturing corridor.

Name

Tongrun International

Legal name

Tongrun International

Website

https://tongruninternational.com

Company type

Private

Founded year

1952

Operating status

Operating

Headcount range

11–50 employees

Short description

Tongrun International is a US-headquartered, vertically integrated contract manufacturer operating 7+ million sq ft of sheet metal, die-casting, injection molding, machining, foundry, and assembly capacity across Texas, China, and Thailand. It serves industrial, medical, telecom, automotive aftermarket, retail, oil and gas, and power distribution OEMs on a quote-based B2B model.

Ownership category

akta.pro rank

Product category

Contract Manufacturing

NAICS

All Other Industrial Machinery Manufacturing (333248), Machinery Manufacturing (333)

SIC

Special Industry Machinery, Nec (3559), General Industrial Machinery & Equipment, Nec (3569)

akta.pro primary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

akta.pro secondary industries

Process & Application Development (DfAM, Parameter Development) (IMAAAJAF), Custom & Contract Blow-Molding Services (Toll Manufacturing) (IMANAGAO)

Keywords

• Contract manufacturing services
• Sheet metal fabrication
• Injection molding
• CNC machining
• Design for manufacturability

Headquarters

HQ city

Bonham

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Contract Manufacturing Services: B2B contract manufacturing services providing precision sheet metal fabrication and assembly services. Revenue generated through manufacturing contracts with industrial customers across multiple verticals including medical, automotive, telecommunications, and commercial retail.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Tongrun International provides vertically integrated contract manufacturing services, including precision sheet metal fabrication, extrusion and die-casting, injection molding and vacuum forming, CNC machining, iron and ductile casting, electro-mechanical assembly, and KANBAN/3PL logistics. Its offering is anchored by a proprietary True DFM (Design for Manufacturability) engineering methodology that optimizes customer product designs for functionality, reliability, manufacturability, and repeatability before tooling begins.

Product overview

Tongrun International is a contract manufacturing company offering precision sheet metal fabrication and assembly services. Their portfolio includes seven core product lines: Sheet Metal Fabrication, Extrusion & Die-Cast, Assembly & Integration, Injection Molding & Vacuum Forming, Machining, Logistics & KANBAN, and Iron/Ductile Casting. These services are supported by their True DFM (Design for Manufacturability) module, which provides engineering optimization from design through packaging. The company operates manufacturing facilities in Bonham, Texas (headquarters), Changshu, China, and Rayong, Thailand, with over 7 million square feet of manufacturing space.

Differentiator

Problem solved

Functional benefit

Products and services

• Sheet Metal Fabrication Precision sheet metal fabrication services producing mechanical piece parts, weldments, chassis, enclosures, racks, doors, and custom components for industrial, medical, automotive, telecom, and power distribution customers.
• Extrusion & Die-Cast Aluminum and zinc die-casting, complex aluminum extrusions, plastic extrusions, and aluminum gravity casting services for high-volume part production across multiple industries.
• Assembly & Integration Product assembly and integration services including PCBA and backplane installation, electro-mechanical assembly, functional testing, cable harness routing, software testing, and UL/CCC labeling for OEM customers.
• Injection Molding & Vacuum Forming Custom plastic processes including injection molding, thermoforming, 3D printing, and vacuum forming for tailored manufacturing solutions across customer programs.
• Machining CNC machining services for small to medium production volumes, including prototyping and blanket order release schedules for OEM customers.
• Logistics & KANBAN Supply chain and logistics services including US warehousing (175,000 sq ft), 3PL and KANBAN inventory management, freight services (FCL/LCL and FTL/LTL), kitting, customized container pack-out, and engineered package solutions for OEM customers.
• Iron/Ductile Casting Foundry services for gray iron and ductile gravity casting with automated green resin sand casting lines and manual casts up to 30,000 lb for industrial OEM customers.

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Sanmina Corporation: Large publicly-traded global EMS/CM with vertically integrated capabilities spanning PCB assembly, sheet metal fabrication, plastics, machining, and supply chain services. Highly comparable as a vertically integrated mid-to-large CM serving medical, industrial, and defense customers with similar capability breadth.
• Jabil Inc. Global EMS leader offering end-to-end manufacturing, assembly, and supply chain services across industrial, healthcare, automotive, and telecom end markets. Direct comparison point for a multi-capability global CM with vertical integration and engineering services similar to Tongrun's.
• Celestica Inc. Global EMS providing design, manufacturing, and supply chain services to industrial, aerospace, healthcare, and telecom OEMs. Direct peer with comparable vertically integrated offering and similar end-market mix to Tongrun.
• Benchmark Electronics: Mid-market EMS offering engineering, fabrication, assembly, and supply chain services to medical, industrial, and aerospace customers. Comparable scale, capability mix, and customer profile as a vertically integrated mid-sized CM.
• Plexus Corp. Mid-market EMS with global footprint focused on regulated end markets including medical, industrial, and aerospace. Comparable vertically integrated CM with similar customer quality profile and engineering-heavy value proposition.
• Kimball Electronics: Mid-market EMS specializing in durable goods end markets including medical, industrial, and automotive. Comparable mid-sized vertically integrated CM serving similar customer verticals with analogous contract manufacturing capabilities.
• TTM Technologies: Global PCB and EMS provider with fabrication, assembly, and integration capabilities serving aerospace, defense, industrial, and medical customers. Direct comparison point for a multi-capability CM focused on regulated markets with engineering depth.

Broad incumbents

• Flex Ltd: Largest global EMS with broad vertical integration across sheet metal, plastics, assembly, and logistics for industrial, automotive, healthcare, and telecom customers. Comparable as a broad incumbent EMS with overlapping capabilities, though materially larger in scale and reach than Tongrun.

Emerging players

• Fabrinet: Specialty EMS focused on optical communications and complex manufacturing for clean and non-clean environments. Comparable as a vertically integrated CM serving industrial/medical-adjacent customers, though concentrated in a narrower product niche with lower volume.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks4 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/TongrunInternational
• LinkedInlinkedin.com/company/tongrun-international

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tongrun International