Yanai Chemical Industry

What Yanai Chemical Industry does

Yanai Chemical Industry Co., Ltd. (柳井化学工業株式会社) is a Japanese specialty chemical contract manufacturer established in 1938 and headquartered in Yanai City, Yamaguchi Prefecture, with a Tokyo headquarters office. The company operates as the chemical industrial products arm of FUJIBO GROUP, a diversified chemical conglomerate. Its core business is contract manufacturing (受託製造) of organic synthesis intermediates for major chemical manufacturers, spanning pharmaceutical raw materials, agricultural chemicals (pesticides), electronic materials, and functional chemical products. Yanai also retains a heritage proprietary product, carbon disulfide (二硫化炭素), originally self-manufactured since 1939 but now sourced from Shikoku Sulfur Carbon Co., Ltd. after in-house production ceased in 1989.

The company's production technology centers on 21 reaction lines distributed across two plants: the Yanai Main Factory (15 lines, 35,536 m², 191 employees) and the Takefu Factory (6 lines, 34,829 m², 69 employees, established in 2013 via absorption-type split from Toyobo Co., Ltd.). Equipment includes glass-lined and stainless steel reactors for acid and alkali handling, centrifugal separation, drying, and distillation systems, plus in-house liquid combustion waste treatment capacity of 115 tons/day. Quality assurance is supported by a 24-hour inspection system. The company produces 120+ distinct product types annually and has commercialized over 300 products over the past decade, with direct manufacturing-to-customer communication enabling small-lot, flexible production from test samples through mass production.

Yanai's revenue model is enterprise B2B contract manufacturing sold through direct field engagement with major chemical manufacturers, with custom quotation-based pricing and confidentiality contracts. Distribution is exclusively domestic Japan via direct sales. GTM motion emphasizes flexibility, confidentiality, and rapid information sharing rather than pricing competition. The company has 260 employees as of September 2024, registered capital of ¥300 million, and reported leadership under Representative Director Koichi Tosaka. Recent corporate actions include a February 2025 website relaunch and a December 19, 2025 television commercial launch — the latter being a notable departure from the historically quiet B2B marketing posture.

Name

Yanai Chemical Industry

Legal name

Yanai Chemical Industry Co., Ltd.

Website

https://yanai.co.jp

Company type

Private

Founded year

1938

Operating status

Operating

Headcount range

251–500 employees

Short description

Yanai Chemical Industry is a Japanese contract manufacturer specializing in organic synthesis intermediates for pharmaceutical, agricultural, electronic materials, and functional chemicals. Operating two factories with 21 reaction lines, the FUJIBO GROUP subsidiary produces 120+ products annually for major chemical manufacturers.

Ownership category

akta.pro rank

Product category

Contract Chemical Manufacturing

NAICS

Chemical Manufacturing (325), Other Basic Organic Chemical Manufacturing (32519)

SIC

Industrial Organic Chemicals (2860)

akta.pro primary industry

Commodity Organic Chemicals (Solvents & Intermediates) (IMAEAAAB)

akta.pro secondary industry

Electronic & High-Purity Specialty Chemicals (IMAEABAD)

Keywords

• Contract chemical manufacturing
• Organic synthesis intermediates
• Pharmaceutical raw materials
• Agricultural chemical intermediates
• Electronic materials production

Headquarters

HQ city

Yanai

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Contract Manufacturing Services: Custom synthesis manufacturing for major chemical manufacturers, producing pharmaceutical intermediates, agricultural chemical intermediates, and functional chemical products. Produces 120+ product types annually.
2. Proprietary Products: Carbon disulfide (二硫化炭素) - originally self-manufactured, now purchased from Shikoku Sulfur Carbon Co., Ltd. (シコク硫炭工業株式会社)

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Yanai Chemical Industry provides contract manufacturing of organic synthesis intermediates for major chemical manufacturers, producing pharmaceutical raw materials, agricultural chemical intermediates, electronic materials, and functional chemical products. Through its Yanai Main Factory (15 reaction lines) and Takefu Factory (6 reaction lines), the company operates 21 reaction lines and delivers more than 120 distinct product types annually. The company also sells carbon disulfide (二硫化炭素), originally a self-manufactured product and now procured from Shikoku Sulfur Carbon Co., Ltd.

Product overview

Yanai Chemical Industry is a chemical manufacturing company that operates as part of the FUJIBO GROUP. The company offers two main offerings: (1) commissioned manufacturing of organic synthesis intermediates including pharmaceutical raw materials, agricultural pesticides, electronic materials, and functional chemicals through its two manufacturing facilities, and (2) its proprietary carbon disulfide product. With 21 reaction lines across Yanai Main Factory (15 lines) and Takefu Factory (6 lines), the company produces over 120 different products annually and has delivered over 300 products commercially in the past decade.

Differentiator

Problem solved

Functional benefit

Products and services

• Commissioned Manufacturing Services (受託製造) Contract manufacturing of organic synthesis intermediates, including pharmaceutical raw materials, agricultural chemical intermediates, electronic materials, and functional chemical products for major chemical manufacturers. Supports flexible production scale from test samples to mass production, with confidentiality contracts and round-the-clock quality inspection.
• Carbon Disulfide (二硫化炭素) Carbon disulfide is the original proprietary product of Yanai Chemical Industry, with manufacturing beginning in 1939. Following the discontinuation of in-house production in 1989, the product is now procured from Shikoku Sulfur Carbon Co., Ltd. and sold by Yanai Chemical Industry.

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core and minor.

• FUJIBO GROUP (フジボウグループ)coreStrategic or Co-development PartnerYanai Chemical Industry operates as part of FUJIBO GROUP's chemical industrial products business segment. The company handles contract manufacturing of organic synthesis intermediates for major chemical manufacturers.
• Shikoku Sulfur Carbon Co., Ltd. (シコク硫炭工業株式会社)minorOthersCarbon disulfide (二硫化炭素), originally manufactured by Yanai Chemical Industry, is now purchased from Shikoku Sulfur Carbon Co., Ltd. after production ceased in 1989.

Scale indicators6 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Sumitomo Chemical: Major Japanese diversified chemical conglomerate with significant contract manufacturing, pharmaceutical, agricultural, and electronic materials operations. Provides broad incumbent comparison to Yanai's specialized contract manufacturing focus.
• Mitsui Chemicals: Large Japanese chemical conglomerate with specialty chemicals, pharmaceutical intermediates, and electronic materials businesses. Broader portfolio than Yanai but overlapping capabilities in organic synthesis and intermediate production.
• Toray Industries: Japanese materials, fibers, and chemicals conglomerate with chemical intermediates and specialty products businesses. Comparable end-market exposure to FUJIBO GROUP's textile-oriented heritage and broader Japanese chemicals landscape.
• Toyobo: Japanese materials and chemicals company with historical connection to Yanai (the Takefu Factory originated from Toyobo via absorption-type split in 2013). Comparable in materials/chemicals manufacturing and Japanese industrial customer base.

Direct peers

• Tokuyama Corporation: Japanese diversified chemical manufacturer producing industrial chemicals, intermediates, and specialty products with similar scale and customer base to Yanai. Operates comparable organic synthesis and inorganic chemical capabilities for Japanese industrial customers.
• Resonac Holdings (formerly Showa Denko): Japanese specialty chemicals and electronic materials producer with significant contract manufacturing and intermediate chemicals operations. Closely comparable in serving electronic materials and functional chemical product segments.
• Nissan Chemical Corporation: Japanese specialty chemicals manufacturer producing intermediates and fine chemicals for pharmaceutical, agricultural, and electronic materials markets. Direct overlap with Yanai's end-customer segments and organic synthesis capabilities.
• API Corporation (Asahi Kasei subsidiary): Japanese pharmaceutical intermediates and active pharmaceutical ingredient manufacturer, part of Asahi Kasei Group. Closely comparable in pharmaceutical intermediate contract manufacturing and organic synthesis services.
• Adeka Corporation: Japanese specialty chemicals manufacturer producing polymer additives, electronic materials, and industrial intermediates. Direct overlap with Yanai's polymer reaction capabilities and electronic materials segment.

Emerging players

• Asymchem Laboratories: Chinese contract development and manufacturing organization specializing in organic synthesis intermediates for pharmaceutical and agrochemical customers. Comparable service offering to Yanai but at significantly larger scale and with cost advantages from Chinese operations.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@%E6%9F%B3%E4%BA%95%E5%8C%96%E5%AD%A6%E5%B7%A5%E6%A5%AD%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 Yanai Chemical Industry