Koki Company
Koki Company is a privately held Japanese manufacturer (est. 1964) of proprietary flux chemistry and solder materials — pastes, fluxes, and adhesives — for SMT and power electronics assembly, serving automotive, consumer, mobile, and power-device customers across 60+ countries.
- Company typePrivate
- Founded1964
- HeadquartersTokyo, Japan
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Koki Company does
Koki Company (株式会社 弘輝 / KOKI COMPANY LIMITED) is a privately held Japanese manufacturer of soldering materials founded in 1964 and headquartered in Adachi-ku, Tokyo. The company develops and produces solder pastes, post-fluxes, tack fluxes, flux-cored solders, and thermosetting adhesives for surface mount technology (SMT) and power electronics assembly. Its technology platform centers on proprietary flux chemistry, with notable differentiators including 2-Step Technology for ultra-low void performance, zero-residue E-Series for formic acid reduction vacuum reflow, halogen-free formulations, HR6A high-durability solder alloys, and ICT-compatible flux flow technology. Products are qualified for ultra-fine pitch printing (0201/03015 chips, 0.1 mm CSP) as well as demanding power-device packaging such as IGBT and MOSFET modules.
The company operates three manufacturing facilities (Japan, Suzhou China, and Thailand) and wholly-owned sales subsidiaries in Hungary and the United States, reaching customers across more than 60 countries via a network of regional distributors. It targets five primary end markets: automotive/in-vehicle electronics, consumer and industrial equipment, mobile and smart devices, electronic components, and power devices — with automotive electrification and EV power conversion as strategic growth pillars. Go-to-market is enterprise field sales supplemented by technical seminars, presence at major industry exhibitions (NEPCON Japan, PCIM Europe/Asia, Productronica, JISSO PROTEC, InnoElectro), and equipment-OEM co-development partnerships such as the Mycronic jet-dispenser approval. The company holds no external institutional investment, has not disclosed revenue, and maintains a headcount of 101–250 employees.
Koki Company firmographics
Firmographics- Name
- Koki Company
- Legal name
- 株式会社 弘輝
- Website
- https://ko-ki.co.jp
- Company type
- Private
- Founded year
- 1964
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Koki Company is a privately held Japanese manufacturer (est. 1964) of proprietary flux chemistry and solder materials — pastes, fluxes, and adhesives — for SMT and power electronics assembly, serving automotive, consumer, mobile, and power-device customers across 60+ countries.
- Ownership category
- akta.pro rank
Koki Company industry classification
Industry- Product category
- Soldering Materials for Electronics Assembly
- NAICS
- Other Electronic Parts and Equipment Merchant Wholesalers (42369), Other Electronic Parts and Equipment Merchant Wholesalers (423690)
- SIC
- Wholesale-Electronic Parts & Equipment, Nec (5065)
- akta.pro primary industry
- Packaging Materials & Chemicals (Underfill/Mold Compound/Die Attach/Solders) (HDAHAGAM)
Keywords
Where Koki Company is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices9 records
Markets served
Koki Company business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Soldering Materials Sales: Koki Company manufactures and sells soldering materials including solder pastes, fluxes, tack fluxes, and thermosetting adhesives. Products are sold directly and through distributors to electronics manufacturers globally.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels6 records
Koki Company product offering
Product offeringCore offering
Koki Company manufactures and sells soldering materials for surface mount technology (SMT) and power electronics assembly, including solder pastes (fine-pitch, ICT-compatible, halogen-free, ultra-low void), post-flux, tack flux, flux-cored solders, and thermosetting adhesives. Their proprietary flux chemistry portfolio is sold globally to electronics manufacturers across automotive, consumer/industrial, mobile, electronic components, and power device segments.
Product overview
Koki Company provides innovative soldering materials for SMT (Surface Mount Technology) and power electronics applications. The product portfolio centers on solder pastes (including fine-pitch, ICT-compatible, halogen-free, low-void, and residue-crack-prevention types), flux products (post-flux, tack-flux, transfer flux), solder alloys (high-durability, high-temperature, low-cost variants), and thermosetting adhesives. The HF1200 Series represents their flagship multi-functional solder paste technology with ultra-low void and high wettability properties. The E-Series targets power device applications with formic acid reduction vacuum reflow capability. Products serve automotive, consumer/industrial equipment, mobile/smart devices, electronic components, and power device segments across 60+ countries globally.
Differentiator
Problem solved
Functional benefit
Products and services
- S3X58-HF1200 (Ultra-Low Void Multi-Functional Solder Paste) Multi-functional solder paste addressing voids, wettability, flux scattering, printability, electrical reliability, and halogen-free requirements, featuring 2-Step Technology for unprecedented low void and high wettability; for SMT manufacturers in automotive, consumer, mobile, and power segments.
- S3X70-CF110N (Residue Crack Prevention Solder Paste) Residue crack prevention solder paste for fine-pitch printing; prevents flux residue cracking under rapid temperature/humidity changes, suppresses ion migration, and supports 0402 chips and 0.4mm pitch BGA components.
- S3X58-HF960 (ICT-Compatible Halogen-Free Solder Paste) ICT-compatible halogen-free solder paste that improves flux flowability to prevent residue on solder after reflow, suppressing probe contamination during in-circuit testing and reducing measurement defects and maintenance costs.
- S3X58-CF100-2 (Residue Crack Prevention - Atmosphere Reflow Compatible) Industry-first atmosphere reflow compatible residue crack prevention solder paste with anti-crack additives; delivers high electrical reliability in condensation environments typical of automotive applications.
- S3X58-M500C-7 (High Wettability Solder Paste)
Quantifiable outcome
- Flux gas exhaust technology achieves unprecedented low void rates in power device soldering
- +2 more outcomes
Companies that use Koki Company
Customer profileNamed customers3 records
Segments5 records
Ideal customer profiles3 records
Koki Company technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Koki Company partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered minor, regional and core.
- Suru ASminorSuru AS, a grinding equipment manufacturer, featured Koki Company in a video case study at their JASIS 2025 exhibition booth, demonstrating研磨装置導入事例.
- KOKI SINGAPORE PTE LTDregionalKOKI SINGAPORE PTE LTD serves as an agency/distributor for Koki Company, exhibiting at SMTA EXPO & TECH FORUM 2025 in Penang, Malaysia to introduce Koki products including S3X58-HF1200 solder paste.
- Mycronic ABcoreSwedish equipment manufacturer Mycronic has approved Koki's S3X70-E160DN solder paste for use with Mycronic jet dispensers MY600 and MY700.
- Merit ElectronikregionalPrevious authorized distributor for Turkey (succeeded by TETRATRONİK from February 2023).
- TETRATRONİK MAKİNE TİCARET LİMİTED ŞİRKETİregionalAuthorized general distributor for Turkey, providing product introduction, technical support, and distribution services to customers in the region.
- Koki Solder America, Inc.core
- Koki Europe Sp. z o.o.core
- Koki Electronic Materials Ltd. (Suzhou)core
Scale indicators2 records
Recent moves7 records
Expansion highlights4 records
Koki Company competitors and assessment
Company assessmentDirect peers
- AIM Solder: Mid-sized global solder materials manufacturer with a broad SMT and power-electronics paste portfolio. Competes with Koki in halogen-free, lead-free, and high-reliability formulations for similar customer segments.
- Indium Corporation: US-headquartered specialty materials producer with a major solder paste, flux, and metal-alloys business. Directly competes with Koki in halogen-free, low-void, and high-reliability solder pastes for automotive, power-device, and aerospace applications.
- Tamura Corporation: Japanese manufacturer of electronic materials including solder pastes, fluxes, and specialty chemicals. Directly comparable to Koki in product offering and Japan-centric customer base, with broader electronic chemicals exposure.
- Harima Chemicals Group, Inc. Japan-based supplier of solder materials and electronic chemicals, including solder pastes and fluxes. Closely competes with Koki in SMT solder paste and serves overlapping automotive and consumer-electronics customers, with a broader chemicals portfolio.
- Nihon Superior Co., Ltd. Japanese manufacturer of solder pastes, fluxes, and lead-free alloys, with patented SN100C alloy technology. Comparable to Koki in size, geography, and customer focus (automotive and industrial electronics).
- Kester (MacDermid Alpha): Long-established US-based solder paste, flux, and wire supplier, now part of MacDermid Alpha. Overlaps directly with Koki in SMT solder pastes and fluxes for industrial, automotive, and consumer electronics assembly.
- Senju Metal Industry Co., Ltd. One of the world's largest solder paste and soldering materials manufacturers, headquartered in Japan. Directly comparable to Koki across product categories (solder pastes, fluxes, alloys) and target customers (automotive, consumer electronics, power devices), but at significantly larger scale.
- Alpha Assembly Solutions (MacDermid Alpha Electronics Solutions): Global solder materials supplier offering a full range of solder pastes, fluxes, and alloys. Direct competitor to Koki across SMT and power-electronics segments, with comparable focus on automotive-grade reliability.
Regional players
- Shenzhen Vital New Material Co., Ltd. China-based solder paste and electronic materials supplier serving primarily Chinese and Asian electronics manufacturers. Comparable product portfolio to Koki but with a regional rather than global sales footprint.
Broad incumbents
- Heraeus Electronics: Division of the German precious-metals and technology group Heraeus, offering solder pastes, bonding wires, and thick-film materials. Larger and more diversified than Koki, but overlaps in solder paste and electronic-materials chemistry.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Koki Company social profiles
Digital presenceKoki Company financial estimates
Financial estimateRevenue estimate
Valuation estimate
Koki Company leadership team
Management profileNumber of profiles
Profiles3 records
Koki Company subsidiaries and ownership
Company hierarchySubsidiaries1 record
Koki Company funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Koki Company M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Koki Company
What does Koki Company do?
Koki Company manufactures and sells soldering materials for surface mount technology (SMT) and power electronics assembly, including solder pastes (fine-pitch, ICT-compatible, halogen-free, ultra-low void), post-flux, tack flux, flux-cored solders, and thermosetting adhesives. Their proprietary flux chemistry portfolio is sold globally to electronics manufacturers across automotive, consumer/industrial, mobile, electronic components, and power device segments.
Is Koki Company a public or private company?
Koki Company is a private company. It is classified as unknown and is currently operating.
When was Koki Company founded?
Koki Company was founded in 1964. It employs 101 to 250 people.
Where is Koki Company based?
Koki Company is headquartered in Tokyo, Japan, in the Asia region.
How does Koki Company make money?
One revenue line is on record: soldering Materials Sales.
Who are Koki Company's main competitors?
Direct peers on record are AIM Solder, Indium Corporation, Tamura Corporation, Harima Chemicals Group, Inc., Nihon Superior Co., Ltd., Kester (MacDermid Alpha), Senju Metal Industry Co., Ltd. and Alpha Assembly Solutions (MacDermid Alpha Electronics Solutions). Shenzhen Vital New Material Co., Ltd. is listed as a regional player. Heraeus Electronics is listed as a broad incumbent.
Does Koki Company have an API?
No public API is recorded for Koki Company.
What industry is Koki Company in?
Koki Company's product category is Soldering Materials for Electronics Assembly. Its primary akta.pro industry code is HDAHAGAM, Packaging Materials & Chemicals (Underfill/Mold Compound/Die Attach/Solders). Its NAICS code is 42369 and its SIC code is 5065.