Top 10 Contract Manufacturers in Thailand

Thailand has become one of Asia’s most strategic manufacturing hubs, attracting global brands looking to reduce risk and build supply chain resilience. With its skilled labor force, strong industrial base, and supportive trade environment, the country is home to many world-class suppliers serving a wide range of industries, from electronics and automotive to consumer and industrial products.

In this article, we highlight ten of the top contract manufacturers in Thailand. These companies range from global leaders with large-scale operations to agile mid-sized firms known for their engineering capabilities and customer focus. Whether you’re seeking high-volume production, specialized assemblies, or a reliable alternative to China, this list provides a starting point for identifying strong manufacturing partners in Thailand.

Large Contract Manufacturer: Hana Microelectronics

Hana Microelectronics is one of Thailand’s leading contract electronics manufacturers, with a strong history dating back to 1978. Headquartered in Bangkok, the company operates several facilities across the country, including major sites in Lamphun and Ayutthaya.

Hana specializes in electronics manufacturing services (EMS), with capabilities that include printed circuit board assemblies (PCBA), semiconductor packaging and testing, RFID components, and microdisplay modules. Their customer base spans industries such as automotive, medical devices, telecommunications, and industrial electronics.

With decades of experience and a strong engineering foundation, Hana has become a trusted partner for global brands seeking high-reliability electronic assemblies produced in Thailand.

Large Contract Manufacturer: Delta Electronics

Delta Electronics (Thailand) Public Company Limited is a leading Thai-based contract manufacturer specializing in power and thermal management solutions. Established in 1988, the company has grown to become a key player in the electronics manufacturing sector, serving clients across IT, automotive, telecommunications, and industrial industries.

Delta's product portfolio includes power supplies, DC-DC converters, solar inverters, fans, and thermal management products. They also offer solutions in electric vehicle charging, industrial automation, data center infrastructure, and smart energy management. With a workforce of over 28,000 employees, Delta operates multiple manufacturing facilities in Thailand, making it a significant contributor to the country's electronics export industry.

Large Contract Manufacturer: Cal-Comp Electronics (Thailand)

Cal-Comp Electronics is one of the largest contract manufacturers in Southeast Asia, with a strong presence in Thailand. It is a subsidiary of Taiwan-based New Kinpo Group, and its Thailand operations serve as a regional hub for electronics manufacturing, providing services to major global brands in sectors like consumer electronics, industrial devices, and IoT.

Cal-Comp offers a full suite of EMS solutions, including PCB assembly, system integration, plastic injection molding, and final product assembly. The company is also known for vertically integrated capabilities such as toolmaking and plastic part production, making it a strong choice for OEMs looking for large-scale, high-volume output under one roof.

Medium-Sized Contract Manufacturer: SVI Public Company Limited

Founded in 1985, SVI Public Company Limited is a mature Thai contract manufacturer specializing in electronics manufacturing services. Headquartered in Pathum Thani, SVI serves as a central hub for its global operations, which extend across Southeast Asia, Europe, and North America.

SVI offers a comprehensive suite of services, including PCBA, box build and system integration, plastic injection molding, metal stamping, cable harness assembly, and supply chain management. The company caters to diverse industries such as industrial automation, automotive and e-mobility, medical technology, communication and IoT, clean energy, aerospace, and smart living solutions.

With a workforce exceeding 4,000 employees worldwide, SVI operates multiple manufacturing facilities, including its primary operations in Thailand. The company's commitment to vertical integration and adherence to international quality standards make it a trusted partner for OEMs seeking reliable and scalable manufacturing solutions.

Medium-Sized Contract Manufacturer: Team Precision Public Company Limited

Team Precision Public Company Limited is a Thai-based electronics manufacturing services provider, established in 1990 and listed on the Stock Exchange of Thailand. Headquartered in Mueang Prachinburi, the company operates additional facilities in Rangsit and Prachinburi provinces.

Specializing in PCBA, SMT, chip-on-board assembly, and complete box-build solutions, Team Precision serves a diverse clientele across industrial, medical, automotive, telecommunications, and consumer electronics sectors. Their services encompass design and prototyping, logistics and warehousing, and comprehensive production traceability.

With a workforce of approximately 1,200 employees, Team Precision is recognized for its commitment to quality and continuous improvement, making it a reliable partner for companies seeking high-quality, mid-sized EMS solutions in Thailand.

Medium-Sized Contract Manufacturer: KCE Electronics Public Company Limited

KCE Electronics is Thailand’s largest manufacturer of PCBs and a key supplier to the global automotive electronics industry. Established in 1982 and listed on the Stock Exchange of Thailand since 1988, KCE has grown into a major player in the global PCB market. The company operates multiple manufacturing facilities across Thailand, including sites in Bangkok, Ayutthaya, and Samutprakarn.

KCE’s product lineup includes single-sided, double-sided, and multilayer PCBs, primarily serving the automotive, industrial, telecommunications, and computer sectors. The company is known for its high-quality standards, adhering to international certifications such as TS 16949 and IPC standards. KCE also produces raw materials like copper-clad laminates through its subsidiary, Thai Laminate Manufacturing Company.

With a strong global presence and a reputation for reliability, KCE Electronics stands out as a leading contract manufacturer in Thailand’s electronics industry.

Medium-Sized Contract Manufacturer: Fabrinet (Thailand) Ltd.

Fabrinet is a Thailand-based contract manufacturer specializing in precision optical, electro-optical, and electronic manufacturing services. Established in 2000, the company has become a trusted partner for OEMs in industries such as optical communications, automotive, and medical devices. 

Operating multiple advanced manufacturing facilities in Thailand, Fabrinet offers services including PCBA, microelectronic packaging, and complex system integration. The company's commitment to quality and precision has positioned it as a key player in the global contract manufacturing sector.

With a focus on high-complexity and high-mix manufacturing, Fabrinet continues to support its clients in bringing innovative products to market efficiently and reliably.

Medium-Sized Contract Manufacturer: Stars Microelectronics (Thailand) Public Company Limited

Stars Microelectronics (Thailand) PCL is a Thai-based contract manufacturer specializing in electronics manufacturing services and outsourced semiconductor assembly and test (OSAT). Founded in 1995 and headquartered in Ayutthaya, the company operates within the Bang Pa-In Industrial Estate, offering vertically integrated solutions that span from wafer processing and IC packaging to PCBA and complete system builds.

Serving a diverse range of industries, including semiconductor, optics and telecommunications, automotive, industrial, medical devices, and professional audio/video, Stars Microelectronics provides comprehensive services covering the entire product lifecycle. These services encompass design, prototyping, mass production, and end-of-life support. With a workforce of approximately 1,000 employees, the company is publicly traded on the Stock Exchange of Thailand under the ticker symbol SMT. 

Stars Microelectronics is recognized for its commitment to quality and innovation, holding certifications such as ISO 9001, ISO 13485, ISO 14000, ISO 22301, and TL 9000. This dedication positions the company as a reliable partner for OEMs seeking high-precision, scalable manufacturing solutions in Thailand.

Medium-Sized Contract Manufacturer: FES International

FES International is a Thailand-based contract manufacturer specializing in high-complexity and high-touch electromechanical products. Established in 2003, the company has built a strong reputation for delivering turnkey manufacturing solutions to a diverse clientele, including startups and Fortune 500 companies.

With facilities in Thailand and China, FES offers a comprehensive range of services, including PCBA, box builds, and complete system integration. Their in-house engineering team provides support across mechanical, electrical, and software disciplines, assisting clients through various product development phases such as EVT, DVT, and PVT tests.

FES serves multiple industries, including broadcast lighting, ruggedized electronics, and complex electromechanical assemblies. Their commitment to quality and flexibility enables them to support production volumes ranging from low-scale prototypes to over one million units annually.

By leveraging a robust supplier network and internal resources, FES International ensures optimized support for cost, quality, and time-to-market, making them a reliable partner for companies seeking to scale their manufacturing operations efficiently.

Medium-Sized Contract Manufacturer: EPower Corp

EPower Corp is a Hong Kong-owned contract manufacturer with operations in China and Thailand, specializing in providing comprehensive manufacturing solutions for startups and established brands. The company offers a range of services including CNC milling and turning, plastic injection molding, stamping, assembly, and quality control. 

With a team of 30 engineers, EPower Corp emphasizes design for manufacturing (DFM) and value engineering to optimize product designs for efficient production. Their vertically integrated approach allows for streamlined manufacturing processes, supply chain consolidation, and end-to-end project management. 

EPower Corp's Thailand facility enhances their global manufacturing capabilities, offering clients flexibility and resilience in their supply chains. The company's commitment to quality and customer satisfaction positions them as a reliable partner for companies seeking to scale production or diversify manufacturing locations. 

Conclusion: Top Contract Manufacturers in Thailand

Thailand continues to solidify its position as a leading destination for high-quality, cost-effective contract manufacturing. From large publicly listed companies to specialized mid-sized firms, the country offers a wide range of suppliers capable of supporting everything from complex electronics to plastic and metal assemblies.

Whether you're a multinational brand looking to diversify away from China or a growing company seeking a reliable partner for production, the top contract manufacturers in Thailand highlighted here provide a strong starting point. Each has a proven track record, established facilities, and the capabilities needed to support both regional and global supply chains.