Minato Holdings inc., listed on the Tokyo Stock Exchange Standard Market,
and its group companies develop various businesses such as memory modules,
ROM writing services, device programmers,
telework solutions, and digital-related equipment.
While challenging new technologies,
we deliver products and services tailored to our customers’ needs.
Fiscal Year ending March 2025
as of April 2026
as of the end of March 2026
We design, manufacture, and sell computer memory devices for industrial equipment,
supplying to major electronics manufacturers and semiconductor device trading companies.
A memory module that mounts multiple DRAM chips on a board. It is used as the main memory of computers. Sanmax excels in procuring DRAM, the main component of DIMMs, and handles everything from development to manufacturing and sales of DIMMs.
Memory modules and various memory products are used in a wide range of applications, including PCs, servers, MFPs (multifunction digital copiers), POS registers, and ATMs.
We plan, design, and sell device programmers
(equipment that writes data to memory devices such as ROMs and CPUs).
●We also develop large automatic writing devices (auto handlers) that incorporate gang programmers. These handlers are mainly supplied to electronics manufacturers and automotive equipment manufacturers.
●We provide program writing services (ROM writing services) using our own device programmers. Our strength as a manufacturer of device programmers lies in our ability to provide robust support for various devices.
Device Programmers
Auto Handlers
ROM Writing Center
We handle a wide range of products, from touch panels with over 25 years of experience to cutting-edge digital signage. Our strength lies in offering comprehensive solutions, including content creation.
Our products are used in various locations such as vending machines,ATMs, and outdoor signage. We provide optimal proposals from a diverse lineup to meet customer needs.
“WiCanvas” is a cloud-based digital signage solution that
only requires a power connection in a Wi-Fi environment.
It is ultra-thin, lightweight, and aesthetically pleasing,
with a wide range of sizes from 32 inches to 75 inches.
Minato Advanced
Technologies Inc.
We provide comprehensive development services from product development,
including software and hardware specifications design,
to mass production, including enclosures.
●With high technical capabilities in image and audio processing system development, we have extensive development experience in a wide range of fields such as industrial, medical, broadcasting, communication, and automotive-related equipment. We have also been involved in the development, manufacturing, and sales of image-related products for many years.
We sell e-sports related products, memory, and peripherals for digital devices such as PCs and smartphones. We operate our own e-commerce site, “Princeton Direct.”
We sell and provide maintenance services and license sales for digital conferencing system-related equipment, including TV and web conferencing.
●Our greatest strength is the sales and maintenance support system we have established over many years as a leading domestic partner for Poly products and Cisco Systems, both U.S.-based companies.
●We handle various brand licenses as a cloud service.
Video and audio
conferencing headsets（Poly）
Video and audio
web conferencing（Cisco）
Video and audio
conferencing peripherals （Yealink）
●We sell peripherals for PCs, smartphones, and tablets, as well as gaming-related products. We handle the original gaming brand “ULTRA PLUS” and "HyperX" brand products, which are widely recognized in the gaming industry.
Princeton’s original
gaming brand “ULTRA PLUS”
Rechargeable touch pen for
iPad that allows direct writing on the screen
Princeton Ltd. develops and sells mobile accessories under its own brand.
●The Company operates the original brand “Tuna.” It focuses on creating unique products that meet customer needs—products that feel both innovative and practical.
Lightweight & Slim
Next-Generation
Compact Mobile Battery
Flexible, High-Durability
Charging & Data Transfer Cable
Original Brand “Tuna”
●We handle a wide range of information system–related products from domestic and international manufacturers, including Android devices for enterprises (smartphones and tablets), barcode readers, RFID readers/writers, and fixed industrial scanners for character recognition and object detection.We propose optimal solutions tailored to customer needs to help improve productivity and enhance operational efficiency.
We handle the construction of various websites, development of business systems and applications, and sales promotions.
Marketing
Solutions
Content
Solutions
System
Solutions
We handle event production and planning, focusing on web and graphic design.
Website Creation
Graphic Design
Video Production
Event Planning and Production
Web Promotion
Japan Joint
Solutions Co.,Ltd.
●We are a trusted partner to record labels, music agencies, and artists, promoting songs, works, and artists to the public. We provide a wide range of planning services, from in-store and company-hosted events to both physical and digital promotions utilizing street vision screens, in-store broadcasting, magazine media, music information websites, and social media.
●We operate creative studios that meet a wide range of production needs—from video production and editing to audio editing, CG creation, copywriting, and data conversion. We provide comprehensive support for video production, covering everything from initial planning to final delivery. In addition, La Donna Harajuku offers a live entertainment business that brings people together through the enjoyment of food and music.
●We fully support our clients’ growth by helping them deliver information about their products and services to a wide audience. Through initiatives that encourage purchasing and build empathy and trust in their brands, we help enhance the overall value of their businesses.
●We address the fundamental challenges faced by companies in an increasingly complex society and break through them through the power of creative design. By maximizing our creativity, we think together with clients, guide them toward optimal outputs that resolve a wide range of issues, and create better communication.
●We engage in the sales of wires, electronic components, and electrical materials. We leverage a strong customer base built since 1955 as an authorized distributor of Furukawa Electric to ensure a stable supply across a wide range of sectors. In addition, our overseas bases in Malaysia and Indonesia manufacture cables, wire harnesses, and air-core coils, enabling an integrated supply system that seamlessly combines both sales and production.
We invest in start-up companies with promising technologies in digital-related fields, as well as venture companies expected to grow, both in Japan and the United States.
We operate solar power plants in Soma City, Fukushima Prefecture, and Takasaki City, Gunma Prefecture.
With over 60 years of history, we pride ourselves on
our technological expertise and track record as a manufacturer.
We are committed to steadily expanding our business scale and
enhancing corporate value through solid management capabilities,
including M&A, new business development,
overseas expansion, and financial execution.
Japanese