Companies in Tokyo

Sumitomo Heavy Industries carries one of Japan's oldest corporate DNA strands: the Sumitomo zaibatsu traces its roots to 1590, when founder Masatomo Sumitomo wrote a business precept — 'never act against the public interest' — that the group still cites today. The industrial arm that grew out of the family's copper business began making machinery in 1888 and is now one of Japan's leading heavy equipment makers. The company's modern business spans four pillars: construction machinery (hydraulic excavators known for fuel efficiency), industrial machinery (gear reducers and gearboxes that are global bestsellers), marine equipment (ship cranes and propulsion systems), and precision machinery (plastic injection molding machines that make everything from car parts to bottle caps). Its cycloid reducers are the quiet workhorses inside countless factories. Headquartered in Tokyo with about 30,000 employees and annual revenue near ¥1.2 trillion, Sumitomo Heavy has also become a major player in the semiconductor supply chain through its precision machinery arm. For industrial buyers, its appeal is the Sumitomo name — a century-plus of engineering credibility, plus product lines deep enough to cover a factory's gear, crane, and machine needs from one supplier.

In 1907, Japan produced no flat glass of its own — every pane was imported from Europe. AGC (then Asahi Glass) changed that, making the country's first domestically produced flat glass and becoming the foundation of an industry. More than a century later, AGC is one of the world's largest glass makers, and glass is only part of the story: the company has evolved into a materials company serving construction, automotive, electronics, and life sciences. The business today spans three areas: glass (architectural glass, automotive glass, and the glass substrates inside displays), electronics (semiconductor-related materials, glass for solar panels and batteries), and chemicals & ceramics (fluoropolymers, and the glass used in pharmaceutical packaging). AGC's float glass process innovations and its specialty glass for smartphones — the chemically strengthened cover glass found in many devices — are industry staples. With about 50,000 employees and annual revenue near ¥1.7 trillion, AGC has transformed itself from 'the glass company' into a diversified materials supplier, with a growing business in EV battery materials and biopharma containers. For construction and electronics buyers, AGC offers one of the world's most complete glass-and-materials portfolios, backed by a century of manufacturing depth.

Toray's history is a story of material substitution: founded in 1926 to make rayon — an early synthetic fiber meant to replace silk — the Japanese company spent the next century repeatedly inventing the next generation of materials. Its most famous achievement: carbon fiber. Toray's carbon fiber, lighter than aluminum and stronger than steel, forms the primary structure of the Boeing 787 and Airbus A350, the first airliners built largely from composites. The company's four business pillars are fibers & textiles (including functional fabrics for sportswear), plastics & chemicals (engineering plastics, films for displays and packaging), IT-related products (the films and membranes inside semiconductors), and carbon fiber composites. Toray also leads in reverse osmosis membranes for water desalination — a quiet monopoly in a business that keeps cities alive. With about 46,000 employees and annual revenue near ¥2.5 trillion, Toray supplies carbon fiber to aerospace, automotive, and wind energy, and its T1100-grade fiber sets performance records in the industry. For buyers, Toray's edge is consistency: decades of materials science, from a company that has made replacing traditional materials its entire reason for existing.

In 1935, TDK — then Tokyo Denki Kagaku, meaning Tokyo Electrical Chemical — was founded to commercialize a breakthrough: the ferrite core, a magnetic ceramic material that could store magnetic energy far more efficiently than metal. Invented by company co-founder Yogoro Kato, ferrite made possible compact transformers, loudspeakers, and magnetic recording — and it made TDK a giant of the electronics supply chain. The company that once dominated the world's magnetic tape market (its cassettes were the gold standard of the audio era) has reinvented itself completely: TDK is now one of the world's largest makers of electronic components, led by multilayer ceramic capacitors (MLCCs), inductors, sensors, and the rechargeable batteries used in smartphones, earbuds, and wearables. Its magnetic expertise also lives on in the magnetic heads and motors inside hard disk drives. Based in Tokyo with about 100,000 employees and annual revenue near ¥2.2 trillion, TDK has transformed itself into a materials science powerhouse — its latest bets include solid-state batteries for wearables, MEMS sensors for automotive and industrial use, and energy storage for data centers. For electronics buyers, TDK is one of the component industry's most diversified suppliers, with deep roots in the materials science that components depend on.

Bridgestone's name is a literal translation of its founder's surname: Shojiro Ishibashi's family name means 'stone bridge', and when he founded the company in 1931 in Kurume, Japan, he chose the English version as the brand. Ishibashi — who made his fortune in traditional Japanese tabi footwear — saw the automobile coming and bet his company on tires. The bet made Bridgestone the world's largest tire and rubber company. The product line covers the full spectrum: passenger and light truck tires (including the premium Potenza and Turanza lines), truck and bus tires, agricultural, mining, and aircraft tires, plus the advanced run-flat technology it pioneered. Bridgestone's purchase of Firestone in 1988 gave it a strong US brand and manufacturing base, making it the rare Japanese company with deep American roots. With about 120,000 employees and annual revenue near ¥4.4 trillion (US$30 billion), Bridgestone is also pushing beyond rubber: its Webfleet telematics platform monitors tire pressure and fleet operations, and its 'solutions as a service' model — selling tire performance rather than just tires — is a strategy the industry is watching closely. For fleet buyers, Bridgestone offers the most complete tire-plus-data package anywhere.

Shin-Etsu is the rare company that dominates two industries most people have never heard of. Founded in 1926 in the Shin-Etsu region of Japan, it is the world's largest producer of PVC (polyvinyl chloride) — the plastic in pipes, window frames, and cable insulation — and also the world's largest supplier of silicon wafers, the thin discs on which every semiconductor chip is built. Roughly one in every three wafers in the world comes from Shin-Etsu. The silicon wafer business is the crown jewel: making a perfect single-crystal silicon ingot and slicing it into flawless wafers is one of manufacturing's hardest tasks, and Shin-Etsu's yields and quality make it the indispensable supplier to TSMC, Samsung, and Intel. Its PVC business, meanwhile, is built on proprietary technologies that give it cost advantages competitors have spent decades trying to match. The company also makes synthetic quartz, rare earth magnets, and photoresist materials. With about 25,000 employees and annual revenue near ¥2.4 trillion, Shin-Etsu is famous for its extraordinarily conservative balance sheet — it holds massive cash reserves and avoids debt, yet consistently posts some of the highest profit margins in the chemical industry. For the semiconductor world, Shin-Etsu is the quiet monopoly underneath every chip that gets made.

Sony began in 1946 in a bombed-out department store in postwar Tokyo, where engineer Masaru Ibuka and physicist Akio Morita founded a tiny radio repair shop called Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering). The company's first product — an electric rice cooker — failed, but a 1955 breakthrough changed everything: Japan's first transistor radio. From there, Sony built a reputation for products the market didn't know it wanted: the Trinitron color TV (1968), the Walkman (1979), the CD (1982), the PlayStation (1994), and the CMOS image sensors that now sit inside most of the world's smartphones. The company renamed itself Sony in 1958, combining the Latin "sonus" (sound) with the English "sonny". It listed on the Tokyo Stock Exchange in 1958 and on the NYSE in 1970 (ticker SONY), becoming one of the first Japanese companies to list in the United States. Co-founder Akio Morita's memoir, "Made in Japan", became a global business bestseller and helped change "Made in Japan" from a cheap-goods label into a mark of quality. Today Sony Group Corporation is organized around "creative entertainment and technology". Its PlayStation platform is one of the largest gaming businesses on earth (over 100 million PS5 consoles sold), Sony Music and Sony Pictures manage some of the world's biggest artists and film franchises — Sony Pictures produces the Spider-Man films — and its semiconductor division is the dominant global supplier of camera image sensors, shipping the chips inside nearly every flagship smartphone. Consumer electronics (BRAVIA TVs, headphones, cameras) remain the public face of the brand, and the company is now developing its first electric vehicles (Afeela, with Honda). Headquartered in Minato City, Tokyo, with about 113,000 employees and annual revenue near ¥13 trillion (US$88 billion), Sony is led by CEO Kenichiro Yoshida, who took over in 2018. After struggling in the 2000s against Apple's iPod and Samsung's TVs, the company refocused on recurring-revenue entertainment businesses and its sensor technology moat, making it one of the few companies in the world that is simultaneously a chip supplier, a console maker, and a global entertainment conglomerate. For B2B buyers, Sony matters as a sensor and electronics OEM supplier — and for everyone else, as the maker of the PlayStation in your living room.

Hitachi was founded in 1910 by engineer Namihei Odaira, who built a 5-horsepower motor — Japan's first domestically produced electric motor — after studying at the Hitachi copper mine, which gave the company its name. The motor succeeded, and Hitachi grew into Japan's biggest industrial conglomerate, a sprawling group of hundreds of companies making everything from trains to hard drives to nuclear reactors. Today Hitachi has consolidated around 'social innovation': digital systems & services (IT infrastructure, Lumada IoT platforms, and financial services software), green energy & mobility (high-speed trains — its bullet trains run on Japan's Shinkansen and were exported to Britain and Taiwan — plus grid equipment and EV components), and connected industries (industrial automation, elevators — the world's largest elevator maker — and building systems). Its global logic division makes the hard disk drives inside data centers, and Hitachi Construction Machinery builds excavators. With about 270,000 employees and annual revenue near ¥9.7 trillion (US$65 billion), Hitachi has sold its semiconductor, battery, and metals businesses to become a digital-and-infrastructure champion. Its Lumada platform — combining operational technology with IT — is the company's answer to Industry 4.0, connecting the physical infrastructure of cities and factories to cloud analytics. For governments and utilities, Hitachi is the Japanese conglomerate that builds the systems society runs on.

Mitsubishi Electric was carved out of one of Japan's oldest corporate empires in 1921, when the Mitsubishi shipyard's electrical equipment division was spun off as an independent company. The Mitsubishi name — three diamonds, chosen by founder Yataro Iwasaki in 1870 — carried enormous weight, and the new company used it to build everything from heavy electrical machinery to the world's best-selling air conditioners. The company's business spans five pillars: energy & industrial systems (generators, transformers, and factory automation), building systems (its air conditioners — the global market leader in split-type ACs under brands like Mr. Slim — and elevators), mobility (car electronics, train systems, and the automotive alternators and starters that go into millions of vehicles), and semiconductor & devices (power modules for EVs and industrial drives). Its factory automation division competes head-to-head with Fanuc and Siemens in robot controllers. Headquartered in Tokyo with about 150,000 employees and annual revenue near ¥5 trillion (US$33 billion), Mitsubishi Electric is a pillar of Japan's keiretsu system, sourcing and selling within the Mitsubishi network while competing globally. Its sustainability push — 'Environmental Vision 2050' — targets carbon neutrality through energy-efficient air conditioning and grid technologies. For builders and manufacturers, Mitsubishi Electric is the brand that cools, moves, and powers modern buildings and factories.

Canon's name has an unlikely origin: when two Japanese engineers founded the company in 1937 to build Japan's first 35mm cameras, they named it after Kwanon, the Buddhist goddess of mercy — and the first camera logo depicted her image with a flame halo. The name was later anglicized to Canon, but the precision-optics spirit remains: Canon would become the world's largest camera maker and one of its most important printer companies. The modern Canon is built on three businesses: imaging (its EOS DSLR and mirrorless cameras are the professional standard, though smartphone cameras have shrunk the market), printing (inkjet and laser printers — Canon is the world's largest printer maker, selling to homes and offices), and medical & industrial equipment (X-ray machines, CT scanners, and semiconductor lithography equipment — Canon is one of only two companies making lithography machines, alongside ASML, though at older technology nodes). Its optics expertise also feeds a growing business in surveillance cameras and VR lenses. Headquartered in Tokyo with about 180,000 employees and annual revenue near ¥4 trillion (US$27 billion), Canon has survived the camera industry's collapse by diversifying into medical imaging and semiconductor equipment — its nanoimprint lithography is a potential challenger to ASML's EUV monopoly for advanced chips. For professionals and manufacturers, Canon remains the lens company — the optics house that has been making images since before World War II.

Komatsu was founded in 1921 when the Komatsu Iron Works in northern Japan spun off from the Takeuchi Mining Company — and its breakthrough came from a crisis: in 1947, the Japanese government ordered the company to study Caterpillar's bulldozers as part of a national reconstruction program, and Komatsu reverse-engineered the technology to build its own machines. By 1964, Komatsu's bulldozers had matched Caterpillar's quality — and the rivalry became one of industry's great duels. Today Komatsu is the world's second-largest construction and mining equipment maker (behind Caterpillar): hydraulic excavators, bulldozers, wheel loaders, and the giant dump trucks and drills used in open-pit mines. Its 'ICT construction' initiative — autonomous haulage systems, drone-mapped job sites, and remotely operated excavators — positions Komatsu as the technology leader in site automation, with driverless trucks now moving ore in Australian mines. Headquartered in Tokyo with about 60,000 employees and annual revenue near ¥3.5 trillion (US$23 billion), Komatsu is one of Japan's most globally successful manufacturers, with production in Japan, the US, Europe, and China. Its joint ventures and dealers serve mining and construction on every continent — the yellow-and-black machines that build the world, engineered to beat the yellow ones from Peoria.

Japan's first domestically produced ball bearing came off an NSK production line in 1916 — before that, the country's fledgling industry imported every bearing it needed. The company that started that line is still at it: NSK (Nippon Seiko Kabushiki Kaisha) is today one of the world's largest bearing makers, and its products quietly spin inside everything from electric vehicle motors to wind turbines and machine tools. NSK's engineering edge is precision at scale: its bearings hold tolerances measured in microns, its ball screws convert rotary motion into linear movement for CNC machines and semiconductor equipment, and its electric power steering systems are fitted to tens of millions of vehicles a year. The company also supplies wheel bearings and hub units to nearly every major automaker. Based in Tokyo with about 30,000 employees and annual sales near ¥830 billion, NSK competes head-to-head with SKF and Schaeffler worldwide. For buyers, its practical strength is breadth: one qualified supplier covering bearings, ball screws, and steering components simplifies audits and shortens the supply chain.

Every CNC machine tool, every semiconductor lithography stage, every robotic arm owes a debt to THK: the company invented the LM Guide in 1972, the linear motion guide that replaced sliding friction with rolling elements and made precise, high-speed linear movement possible. Before that invention, moving a machine axis smoothly and accurately was slow, expensive, and maintenance-heavy. THK's bet on a product category it basically created paid off: it remains the global leader in linear motion systems, with a dominant share of the LM guide market. Its components move the stages of lithography machines, the axes of machine tools, the carriages of injection molding robots, and the gantries of large-format 3D printers — anywhere that needs nanometer-level repeatability. Based in Tokyo with about 17,000 employees and annual revenue near ¥360 billion, THK also produces ball screws, actuators, and a newer line of miniaturized guides for medical and semiconductor equipment. For machine builders, THK is often the default spec: engineers design around its catalogs before competitors' parts are even considered.