YUFU

What YUFU does

YUFU GOSEI KAGAKU CO., LTD. (由布合成化学株式会社) is a privately held Japanese synthetic resin injection molding contract manufacturer founded in December 1963 and headquartered in Ota-ku, Tokyo, with primary production concentrated in Oita Prefecture. The company operates an integrated manufacturing stack spanning in-house die/mold design and tooling, injection molding (including specialized dual-color and insert molding), and downstream electronic and mechanical assembly, supported by Class 10,000 clean-room facilities for medical and optical components. Its underlying technology base comprises 168 injection molding machines (20–360 tons, including 5 dual-color units), CNC machining, EDM/wire-cut equipment, CMM inspection, and chip-mounting capability, with engineering plastics ranging from general-purpose (PMMA, ABS, PP) through engineering (PC, PBT, PA, POM) to super-engineering grades (PPS, LCP).

The company serves enterprise OEM customers across five identified verticals: automotive electronics (LED components, switches, sensors, meters, panel components), office automation equipment (scanner/printer/copier parts), consumer electronics and AV/home appliances, mobile/handheld devices (precision insert-molded connectors and sensors), and medical devices. YUFU operates a direct B2B project-based sales model with on-site engineering consultation and a 'reverse-proposal' (逆提案) capability that allows the company to suggest design and tooling improvements to customers based on QCDE (Quality, Cost, Delivery, Environment) review. Revenue is generated from contract-manufactured part sales, with both prototyping and mass-production volumes handled across its four-country manufacturing footprint in Japan, China (Zhuhai), Thailand, and Malaysia — enabling high-mix low-volume domestic Japanese work to be paired with cost-competitive offshore mass production. Pricing is project/quotation-based and not publicly disclosed.

The firm is led by President Yoshiharu Fujihara and holds ISO9001 and ISO14001 certifications across its Japan, China, and Thailand sites. Its value proposition rests on vertical integration (die-to-assembly under one roof), a multi-country production network, and 50+ years of accumulated molding know-how supported by structured internal training and government-licensed skilled-worker certifications.

Name

YUFU

Legal name

由布合成化学株式会社

Website

https://yufu-gosei.co.jp

Company type

Private

Founded year

1963

Operating status

Operating

Short description

YUFU GOSEI KAGAKU CO., LTD. is a privately held Japanese contract manufacturer founded in 1963, producing precision injection-molded synthetic resin parts and assemblies for automotive electronics, OA equipment, consumer electronics, mobile devices, and medical device OEMs across Japan, China, Thailand, and Malaysia.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Injection molding manufacturing services: YUFU generates revenue through the manufacture and sale of injection-molded synthetic resin parts and completed assemblies. The company serves as an OEM/contract manufacturer producing precision parts (LEDs, switches, sensors, connectors, medical devices) for customer-specified applications. Revenue is derived from part production contracts, with both prototyping and mass-production volumes. The company operates on a direct B2B model with manufacturing facilities in Japan, China, Thailand, and Malaysia.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels2 records

Core offering

YUFU is a contract manufacturer that designs, fabricates molds, and produces injection-molded synthetic resin components for OEM customers in the automotive, office automation (OA) equipment, consumer electronics, and medical device industries. The company operates production facilities across Japan, China, Thailand, and Malaysia, offering capabilities including single-color and dual-color molding, insert molding, and post-mold assembly of finished components.

Product overview

YUFU (由布合成化学株式会社) is a synthetic resin injection molding manufacturer with over 50 years of experience offering integrated manufacturing services from mold design and manufacturing through mass production molding to assembly. The company operates multiple production facilities in Japan (Ōita, Kitsuki, Hiji), China (Zhuhai), Thailand, and Malaysia. The core product portfolio includes Mold Design and Manufacturing (金型), Injection Molded Products (成形品) such as LED components, switches, sensors, meters and medical devices, Dual-Color and Insert Molding (2色成形・インサート成形) for complex multi-material parts, and Assembly Products (組立品) featuring electronic assembly capabilities. Supporting infrastructure includes specialized resin materials (general-purpose, engineering, and super-engineering plastics) and advanced manufacturing equipment including 117+ horizontal molding machines, dual-color machines, CNC equipment, and clean room facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Injection Molded Products

Quantifiable outcome

• ISO9001 and ISO14001 dual certification across Japan, China (Zhuhai), and Thailand manufacturing sites, demonstrating systematic quality and environmental management.
• +2 more outcomes

Segments5 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• YUFU GOSEI (M) SDN BHDcoreOthersWholly-owned manufacturing subsidiary in Selangor Darul Ehsan, Malaysia. Part of the company's global manufacturing network providing offshore mass-production capacity in Southeast Asia, complementing domestic Japanese operations.
• YUFU GOSEI (THAILAND) CO., LTD.coreOthersWholly-owned manufacturing entity in Ayutthaya Province, Thailand, located at Hitech Industrial Estate. ISO9001 and ISO14001 certified. Provides Southeast Asian mass-production capacity with quality standards aligned to domestic operations.
• 由布合成（珠海）注塑有限公司 (Yufu Gosei (Zhuhai) Injection Molding Co., Ltd.)coreOthersWholly-owned manufacturing subsidiary in Zhuhai, Guangdong Province, China. Produces injection-molded parts, electronic assemblies, and automotive components. ISO9001 (2014) and ISO14001 (2006) certified.
• 由布合成（香港）有限公司 (Yufu Gosei (Hong Kong) Limited)minorOthersHong Kong-registered business entity serving as the company's regional commercial or holding entity for Greater China operations.
• 株式会社ユービック (Yubic Co., Ltd.)minorOthersDomestically incorporated group company in Kunisaki, Oita Prefecture, Japan. Established August 2000. Nature of business not detailed in available sources.
• 由布テクノロジー(マレーシア) (YUFU Technology (Malaysia))minorOthersTechnology-related subsidiary established in Malaysia in May 2007, part of the company's Southeast Asian group structure.

Scale indicators4 records

Recent moves19 records

Expansion highlights5 records

Direct peers

• Piolax Corporation: Japan-headquartered precision plastics and metal components manufacturer serving automotive, industrial, and medical OEMs. Highly comparable to YUFU given its vertical integration, in-house tooling capability, and Japanese-OEM-focused custom plastics business model.
• Nifco Inc. Japanese manufacturer of precision plastic parts and assemblies for automotive and industrial applications, with substantial overseas production in Asia. Closely comparable end-market mix and global manufacturing footprint.
• Mutsumi Holdings Co., Ltd. Japanese plastic molding and components group producing precision resin parts for automotive and electronics customers, including in-house mold design. Directly overlaps YUFU in business model, customer base, and operational scope.
• Sanwa Kakoh Co., Ltd. Mid-sized Japanese contract plastics manufacturer with automotive and industrial electronics exposure, including mold-making capability. Comparable in scale and capabilities to YUFU.
• Protolabs: Digital contract manufacturer offering rapid injection molding, CNC, and 3D printing services globally. Comparable end-customer use case (custom plastic parts on-demand) and serves similar B2B OEM customers, although via a software-led platform rather than a traditional Asian factory network.
• Xometry: Digital marketplace for on-demand custom manufacturing including injection molding, serving similar OEM/industrial buyers. Operates a different business model (marketplace vs. captive factory) but competes for the same contract manufacturing wallet.

Emerging players

• Fictiv: Digital manufacturing platform that connects buyers to vetted injection molding and CNC suppliers globally. Solves an analogous problem to YUFU (custom plastic parts sourcing) but through a software/service model rather than captive factories.
• Hubs (formerly 3D Hubs): Global digital manufacturing platform with injection molding and CNC services for prototyping and production. Addresses the same custom plastic-parts sourcing problem for OEMs but through a distributed supplier network rather than owned factories.

Broad incumbents

• Asahi Kasei Corporation: Large diversified Japanese chemicals and plastics group with both resin material production and downstream plastics processing. Overlaps with YUFU on the plastics manufacturing side but operates at vastly larger scale across multiple unrelated segments.

Others

• Nissei Plastic Industrial Co., Ltd. Japanese manufacturer of injection molding machines themselves rather than molded parts; provides the equipment class YUFU relies on. Adjacent infrastructure supplier to the same contract-molding ecosystem rather than a direct competitor.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries6 records

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 YUFU