Japanese Chemical Industry: Supply Chain and Trading Houses
Your plant in Chennai, Rayong, or Tennessee needs a resin grade, a specialty additive, or an electronic material made in Japan. The drawing or the customer's approved materials list names the Japanese grade, but the maker's sales office tells you to contact a trading company, and two other distributors quote the same product at different prices. Should you buy from the maker, a Japanese chemical trading company, or a local distributor? The answer depends on how Japan's chemical industry is organized.
Japan's chemical industry starts with naphtha, a light oil fraction taken from crude oil, and passes it through several layers of companies before it becomes a part in a car or a phone. The upstream end is concentrated in a few large companies. The downstream end is split among many small and mid-sized firms. Between them, chemical trading companies (kagaku shosha, 化学商社) handle much of the distribution.
This guide explains who does what in that chain, how orders, goods, and money flow between them (what Japanese buyers call shoryu, 商流, the commercial flow), where profit sits, and what is changing. It ends with a channel table, a checklist of questions to ask, and a sample inquiry email.
Contents
The Japanese Chemical Supply Chain at a Glance
Materials move downstream from naphtha and change form at each step. Upstream, companies handle larger volumes. Downstream, the number of product types grows.
At the top, oil companies refine crude oil into naphtha and supply it to chemical makers, along with naphtha imported from overseas. Integrated chemical makers crack the naphtha into basic chemicals such as ethylene and propylene, then turn those into resins, synthetic rubber, and other derivatives.
Materials pass through several layers of companies on the way from feedstock to finished product.
Note: One company often covers several steps, and trading patterns differ by product.
Basic chemicals are made at a small number of petrochemical complexes (kombinato, コンビナート). According to a December 2025 report by Sumitomo Mitsui Trust Bank, Japan has 12 ethylene crackers. Plastic and rubber processing, by contrast, is spread across many companies throughout the country.
The basic shape of the industry follows from this: the further upstream, the fewer and larger the companies; the further downstream, the more numerous and smaller they are. A company's position decides how many customers it has and how it does business, and it also decides which door you should knock on as a buyer.
Five Players and What Each One Sells
Company size and the way each company earns money change a lot from one level to the next. Government statistics show the gap between the companies that make materials and those that process them.
Material makers and processors run establishments of very different sizes.
Source: Ministry of Economy, Trade and Industry (METI), 2024 Economic Structure Survey (manufacturing establishments), as compiled in the Japan Chemical Industry Association's "Chemical Industry of Japan 2025." Shipments are for 2023. Per-establishment values are shipments and employees divided by the number of establishments.
Integrated Chemical Makers
Integrated chemical makers run large plants at the petrochemical complexes around the clock and make everything from basic chemicals to resins and functional materials. Most are large companies with sales in the trillions of yen, and market conditions and competition differ widely from one business unit to the next.
Because they run mass-production plants, the operating rate drives their profit. Production runs on shifts, and a large share of staff works on equipment maintenance and process safety. Planned plant shutdowns also affect when material is available. See Teishu (Plant Turnaround) in Japan.
Specialty and Functional Chemical Makers
Makers of semiconductor materials, electronic materials, and high-performance films produce small volumes at high unit prices. They keep improving their materials to match each customer's development work, so R&D and technical sales carry a lot of weight.
Many of their customers, the semiconductor and electronic component makers, are outside Japan, so many of these companies earn a large share of sales overseas. Dealing with overseas customers and sites is part of their daily work. For where Japanese companies hold top global share in materials, see Where Japan Holds Top Global Share.
Plastic Processors
METI's 2024 survey counted 13,745 plastic products establishments, more than twice the 5,641 in the chemical industry. They also employ more people: about 449,000, compared with about 398,000.
Shipments per establishment, however, average about JPY 1.0 billion, roughly one-sixth of the chemical industry's JPY 5.9 billion. Small and mid-sized plants spread across Japan are typical in this sector, and many of them mass-produce parts for a few specific customers.
Rubber Product Makers
Japan has 2,380 rubber products establishments, which shipped JPY 3.953 trillion in 2023. The major tire makers run many plants outside Japan, while mid-sized and small specialists make industrial rubber products such as belts, hoses, and anti-vibration rubber.
Tires go both to carmakers for new vehicles and to the replacement market. A tire maker that sells a large share to the replacement market depends less on new-car production.
Chemical Trading Companies
Chemical trading companies buy and sell chemicals and resins between makers and users, and they also handle logistics, inventory, and credit (they carry the risk that a customer pays late or not at all). Some are as large as the makers they buy from. Nagase & Co. reported consolidated sales of JPY 972.8 billion and Inabata & Co. JPY 832.7 billion for the fiscal year ended March 2026.
Their job goes beyond delivering one maker's products to many customers. They bring foreign makers' products into Japan, propose combinations of materials, and pass new application ideas from users back to makers. Japan's general trading companies (sogo shosha, 総合商社) also run chemical divisions.
How Orders, Goods, and Money Flow
Chemical sales in Japan follow two main routes: the maker sells directly to the customer, or it sells through a chemical trading company. As a rule, makers deal directly with large accounts and reach the many smaller customers through trading companies and appointed agents (dairiten, 代理店).
Three stages: before adoption, mass production, and after.
Note: For commodity products, the stage before adoption is short, and price and delivery matter most.
Once Adopted, a Material Stays
For functional materials and automotive materials, the supplier works with the customer from the product development stage through repeated samples and evaluations. Once a material is adopted, the business usually continues for a long time. Changing the material means the customer has to requalify its own product, so it does not switch easily.
For you as a buyer, this cuts both ways. A grade named on a Japanese customer's drawing or approved list is hard to replace with a "comparable" local grade, and the substitute usually needs the customer's approval. If the grade is specified, plan to buy that exact grade through a channel the maker supports.
How Prices Are Set
Pricing differs by product. For commodity resins and similar products, a common method passes changes in the price of naphtha, the feedstock, into the product price through a fixed formula. When the feedstock rises, the product price follows with a time lag.
For functional materials, performance and stable supply justify the price. The harder a material is to replace, the stronger the seller's position in price talks. This also explains much of the profit picture below. For how to handle a price increase notice from a Japanese supplier, see Price Increase Requests From Japanese Suppliers.
What the Trading Company Adds
In this flow, the chemical trading company holds inventory, arranges logistics, and takes on the risk of collecting payment. For small processors, it is an essential source for getting the quantities they need, when they need them. That is also why a maker may send a small or new overseas buyer to a trading company rather than sell directly.
Where the Profit Sits
According to the Japan Chemical Industry Association (JCIA), based on the Ministry of Finance's corporate statistics, Japan's chemical industry had an operating profit margin of 8.5% in fiscal 2024, the second highest among manufacturing industries. Profit, however, varies a lot within the industry.
Where profit comes from depends on the kind of product.
Note: General tendencies. Margins differ by company and by year.
People often describe a "smile curve" for manufacturing, in which the upstream and downstream ends earn more than the middle. The chemical industry is said to follow a similar pattern, but here the gap depends less on position in the chain and more on whether the material can be replaced. Makers whose main business is hard-to-replace specialty materials report much higher margins than those weighted toward basic chemicals.
Companies with a large basic chemicals business are more exposed to market cycles. Sumitomo Chemical, for example, posted an operating loss of JPY 488.8 billion in the fiscal year ended March 2024, then returned to an operating profit of JPY 193.0 billion the following year. Large swings from year to year are typical of materials businesses, so one year's figure says little on its own.
Chemical trading companies run on lower margins than makers. They hold inventory and logistics functions and earn by building up volume. Makers' profit also comes partly from technical support matched to the customer's process: advice on molding conditions and help with defects build trust and lead to adoption in the customer's next product. If you buy through a trading company, ask which party provides that technical support.
Where Should a Buyer Outside Japan Buy?
Outside Japan, you will find the same three doors: the maker, a Japanese chemical trading company, and a local specialist distributor. Many Japanese chemical makers have sales subsidiaries in Asia, the US, and Europe, and the larger chemical trading companies run their own overseas networks. Nagase, for example, has subsidiaries in China, Southeast Asia, India, and the Americas. Use the table below as a starting point.
| Your situation | Where to start | Watch out for |
|---|---|---|
| Large, steady volume of one grade (for example, a resin for a production line) | The maker's local sales subsidiary, asking about direct supply | Minimum order quantity, pricing formula, and whether the maker still routes small lots through a trading company |
| A grade specified by a Japanese customer, in small or medium volume | The trading company the maker or your customer already uses, if it has a local branch | Confirm the material comes through a channel the maker supports, with its certificate of analysis (CoA) |
| Several materials from different makers in one order | A chemical trading company | Its margin covers inventory and credit; agree who handles technical questions and claims |
| A niche material (electronic, coating, adhesive, or pharmaceutical grade) | The maker's local office, asking for its appointed distributor (dairiten) in your country | A maker may appoint specific distributors for each region; other sellers may not get its technical support |
| A local substitute for a Japanese grade | The maker first (it may have a local plant or an equivalent grade), then local makers | The customer who specified the grade must approve any change |
| A new material still under evaluation | The maker's technical sales, with the trading company if the maker requests | Sample terms, NDA, and who owns the evaluation data |
Paperwork and Compliance Checks
Chemicals come with more paperwork than most purchased parts. Ask for the safety data sheet (SDS) in English and in the format your country requires, and confirm who acts as the importer of record for chemical registration in your country, for example under TSCA in the US or REACH in the EU. Some chemicals and electronic materials also fall under Japan's export controls under the Foreign Exchange and Foreign Trade Act, so ask the supplier whether an export license applies to your grade and destination. Your own compliance team, not the supplier, decides what your plant needs.
Who Decides the Grade
If your plant supplies a Japanese customer or belongs to a Japanese group, the material choice may not be yours. The customer's engineering team often fixes the grade at the design stage, and the maker and trading company that supported that adoption expect to supply it. If local supply for that grade is weak in your country, raise it before mass production starts, not after. For a formal quote request, see RFQ to a Japanese Manufacturer.
How the Structure Is Changing
The structure of Japan's chemical industry has been shifting in recent years. Three changes matter most for buyers.
Consolidation of Ethylene Crackers
Japan produced about 4.99 million tonnes of ethylene in 2024, the first time output fell below 5 million tonnes since 1988. In response, companies have announced plans to consolidate crackers across company lines. The main examples:
- Chiba area: Mitsui Chemicals and Idemitsu Kosan
- Keiyo area (also in Chiba): Sumitomo Chemical and Maruzen Petrochemical
- Western Japan: Mitsubishi Chemical, Asahi Kasei, and Mitsui Chemicals
Merging plants across companies breaks with the old model in which each company ran its own complex. In February 2025, ENEOS also announced plans to shut part of its ethylene capacity at Kawasaki (one of the site's crackers, according to ChemOrbis), targeting the end of fiscal 2027 (March 2028). For buyers of basic chemicals and commodity resins, this can mean changes in production sites, grade lineups, and supply terms, so watch for notices from your suppliers.
Business Portfolio Restructuring
Chemical makers are separating businesses that swing with the market and putting their resources into growth areas such as semiconductor materials. Business sales and mergers with other companies have become common.
JSR, for example, transferred its elastomer business, including synthetic rubber, to ENEOS in 2022 and shifted toward semiconductor materials. In 2024, after a tender offer by a company under Japan Investment Corporation (JIC), it was delisted. The same company can look very different ten years later. When a business you buy from changes owners, the product name, legal entity, contacts, and contract terms can change too. See Japanese Supplier Financial Health: Warning Signs.
Customers Moving Overseas
As carmakers, electronics makers, and other customers moved production overseas, material makers and processors built plants abroad too. Developing in Japan and producing and selling overseas is now a common split. In 2024, about 70% of Japan's chemical exports went to Asia, so Japanese plants increasingly work with overseas customers in mind.
Checklist: Before You Buy a Japanese Chemical Product
Use these questions when you buy Japanese chemicals or materials outside Japan. Ask the maker's local office, the trading company, or your customer, depending on the item.
- What is the exact grade name, and is it the same grade sold in Japan or a regional version?
- Does the maker sell this grade directly in our country, or through an appointed distributor or trading company? Is our seller on that list?
- Where is the grade made, and is it shipped from Japan or from a plant in our region?
- What are the minimum order quantity, packaging, standard lead time, and shelf life?
- How is the price set: fixed for a period, or linked to a feedstock formula? How often is it revised?
- Can we get an English SDS that meets our country's rules, and a certificate of analysis (CoA) with each lot?
- Who is the importer of record for chemical registration, and does any export license apply?
- Who answers technical questions and handles quality claims: the maker, the trading company, or both?
- Will the supplier notify us before changing the plant, raw materials, or formulation?
- Has the customer who specified the grade approved any alternative grade or source?
Sample Inquiry Email to a Maker's Local Office
The example below is fictional. Replace the bracketed items.
Subject: Supply route for [grade name] to [plant name], [country]
Hello,
Our plant in [city, country] makes [product] for [customer name], who specifies the following material from your company:
Grade: [full grade name]
Estimated volume: [quantity per month or year]
Required start date: [date]Could you tell us:
1. whether you supply this grade directly in [country], or the distributor or trading company we should order from;
2. where the grade is produced and the standard lead time to our site;
3. the minimum order quantity, packaging, and shelf life;
4. whether an English SDS and a certificate of analysis are provided with each lot;
5. who handles technical questions and quality claims for our region.We can share the customer's specification sheet if needed.
Best regards,
[Name, title, company, phone]
Limits of This Guide
- This describes typical patterns in Japan. Routes vary by product, maker, and volume, and large users often buy direct.
- Sales channels outside Japan differ by maker and by country. Ask the maker's local office for its current distributors.
- Chemical regulations (registration, SDS, export controls) are summarized only as items to check. Your compliance team decides what applies.
- This guide does not rank Japanese chemical companies or compare their market shares.
FAQ
What does a Japanese chemical trading company do?
It buys chemicals and materials from makers and resells them to users, and it also handles logistics, inventory, and credit. Many also combine materials from several makers into a proposal and pass application ideas between users and makers.
Can I buy chemicals directly from a Japanese maker?
Often, if your volume is large. Makers usually deal directly with large accounts and serve smaller customers through trading companies and appointed distributors. Ask the maker's local sales office which route applies to your volume.
Why does the price differ between distributors for the same grade?
Each distributor adds its own margin for inventory, logistics, and credit, and some may source through different routes. Check that the seller is supported by the maker and supplies a certificate of analysis for each lot.
Can I replace a specified Japanese grade with a local one?
Only with the approval of the customer who specified it. Changing a material usually means requalifying the product, so ask the maker about a local or equivalent grade first and get the change approved before you switch.
Sources
- Establishments, employees, shipments; operating profit margin by industry; chemical exports by region: Japan Chemical Industry Association, "Chemical Industry of Japan 2025" (figures from METI and the Ministry of Finance)
- Ethylene crackers, 2024 production, and consolidation plans: Sumitomo Mitsui Trust Bank, Economic Report, December 2025 (Japanese)
- ENEOS Kawasaki cracker closure plan: ChemOrbis, "Japan's ENEOS plans permanent closure of Kawasaki cracker"
- Nagase & Co. sales: Nagase & Co., consolidated financial results for the fiscal year ended March 2026 (Japanese)
- Inabata & Co. sales: Inabata & Co., consolidated financial results for the fiscal year ended March 2026 (Japanese)
- Sumitomo Chemical operating results: Minkabu, Sumitomo Chemical financial results (Japanese)
- Nagase overseas network: Nagase & Co., Global Network
- JSR elastomer business transfer: European Rubber Journal, "JSR completes sale of elastomers business to Eneos"
- JSR tender offer and delisting: Nikkei Asia, "Nikkei to remove JSR from Semiconductor Stock Index"
- Japan's export controls: METI, Security Export Control
Original article in JapaneseThis guide is adapted from a MONOSCOPE article written for readers in Japan: 化学業界の構造をわかりやすく解説｜サプライチェーン・商流・利益構造
About the editor
MONOSCOPE EditorFOUNDER & EDITORSpent about ten years at a plant equipment maker and a plant engineering company, proposing, designing, and commissioning equipment, then moved into web marketing. Now a web consultant for B2B manufacturers, helping them explain their products and technology. Licensed in Japan as an Energy Manager and a Third-Class Chief Electrical Engineer.
Has run an engineering blog since 2017 (500+ articles) and a Japanese YouTube channel with about 20,000 subscribers. Each English guide is written from the Japanese shop-floor point of view and checked against the cited standards.
