What RS Technologies does

RS Technologies Co., Ltd. (株式会社RSテクノロジーズ, TSE Prime: 3445) is a Japanese semiconductor materials company founded in December 2010 that operates the world's leading silicon wafer reclamation business, holding the top global market share in regenerated monitor and dummy wafers used by semiconductor manufacturers. The company's core product is silicon wafer regeneration, employing proprietary de-copper (De-Cu) removal and minimum-polishing processes that extend wafer lifecycle while reducing CO2 emissions to approximately 1/9th of new wafer production. Beyond reclamation, RS Technologies manufactures prime silicon wafers (5-inch, 6-inch, and 8-inch) for power semiconductor applications through its Shandong GRITEK subsidiary in China, and produces consumable components (quartz glass, monocrystalline and polycrystalline silicon products) for semiconductor manufacturing equipment via DG Technologies in Japan.

The company operates a vertically integrated semiconductor materials platform spanning 16+ factories across Japan (3), China (7), Europe (5), the US/Europe (3), Israel (1), and Taiwan (1), serving global semiconductor manufacturers. Revenue streams include silicon wafer reclamation, prime wafer manufacturing, semiconductor consumables, equipment resale, and technical consulting. RS Technologies also operates overseas sales agencies for Foxconn Fukuyama Technologies' laser diodes and Hitachi Power Solutions' ultrasound imaging devices, and has entered renewable energy through subsidiary LE System, which manufactures vanadium electrolyte for Vanadium Redox Flow Batteries (VRFB). The company's go-to-market is sales-led B2B, with direct relationships to chip manufacturers supported by 2,744 consolidated employees as of December 2025. Notable corporate milestones include the 2022 listing of subsidiary GRITEK on the Shanghai Stock Exchange STAR Market, RS Technologies' own transition to TSE Prime Market in April 2022, and recent M&A including the December 2024 acquisition of Aisuo Precision Parts (Huizhou) and establishment of RS Energy (Shandong) in June 2025.

Name

RS Technologies

Legal name

株式会社RSテクノロジーズ

Website

https://rs-tec.jp

Company type

Public

Founded year

2010

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

RS Technologies (TSE Prime: 3445) is a Japanese semiconductor materials company holding the world No. 1 market share in silicon wafer reclamation, serving global chip manufacturers with regenerated wafers, prime wafers, and consumable components across 16+ factories in Japan, China, Taiwan, and Europe.

Ownership category

akta.pro rank

Product category

Semiconductor Materials

NAICS

Semiconductor and Related Device Manufacturing (334413), Other Electronic Component Manufacturing (334419)

SIC

Semiconductors & Related Devices (3674), Electronic Components, Nec (3679)

akta.pro primary industry

Silicon Wafers (Prime/Test/SOI) (HDAHAGAA)

akta.pro secondary industry

Wafer Services & Reclaim (Epitaxy, Thinning, Reclaim) (HDAHACAH)

Keywords

• Silicon wafer reclamation
• Prime silicon wafers
• Semiconductor manufacturing consumables
• Wafer regeneration services
• Vanadium redox flow batteries

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices14 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Silicon Wafer Reclamation: Core business regenerating used silicon wafers (monitor and dummy wafers) for semiconductor manufacturers, enabling cost reduction by reusing wafers that would otherwise be discarded. Regenerated wafers produce approximately 1/9th the CO2 of new wafer production.
2. Prime Silicon Wafer Manufacturing and Sales: Manufacturing and sales of 125mm, 150mm, and 200mm prime silicon wafers, primarily for power semiconductor manufacturing, through subsidiary Shandong GRITEK. Also includes 12-inch prime wafer R&D via SGRS.
3. Semiconductor Manufacturing Consumable Components: Manufacturing and sales of quartz glass, monocrystalline and polycrystalline silicon products for semiconductor manufacturing equipment through subsidiary DG Technologies. Focus on precision silicon processing.
4. Overseas Sales Agency (Laser Diode, Ultrasound): RS Technologies acts as overseas sales agent for Laser Diodes manufactured by Foxconn Fukuyama Technologies and Ultrasound Imaging Devices from Hitachi Power Solutions, earning commissions on international sales.
5. Semiconductor Equipment Buyback and Resale: Purchase and resale of semiconductor production equipment, including transport and commissioning services. Also known as semiconductor-related equipment sales.
6. Vanadium Electrolyte for VRFB: Manufacturing and supply of vanadium electrolyte solution for Vanadium Redox Flow Batteries through subsidiary LE System.
7. Technical Consulting Services: Technical consulting services for semiconductor wafer manufacturing processes, including technical guidance and education services.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

RS Technologies manufactures and sells prime silicon wafers and operates the world's leading silicon wafer reclamation business, regenerating used monitor and dummy wafers for semiconductor manufacturers. The company also produces semiconductor manufacturing equipment consumables (quartz glass and silicon components) via DG Technologies, manufactures vanadium electrolyte for Vanadium Redox Flow Batteries (VRFB) via LE System, and serves as overseas sales agent for Foxconn Fukuyama Laser Diodes and Hitachi Power Solutions ultrasound imaging devices.

Product overview

RS Technologies is a comprehensive semiconductor and eco-solution enterprise operating a multi-product portfolio centered on silicon wafer regeneration (wafer reclaim) services, which hold the top market share globally. The company offers prime silicon wafer manufacturing through its Shandong GRITEK subsidiary, semiconductor manufacturing equipment consumables (quartz glass, silicon components) via DG Technologies, and distributes laser diodes (Foxxcon) and ultrasound imaging devices (Hitachi Power Solutions). The renewable energy segment includes VRFB electrolyte production (LE System) and solar power generation. Supporting services include semiconductor equipment trading, oxide film deposition, wafer sales, and technical consulting. The company maintains global operations across Japan, China, Taiwan, and Europe with 16 subsidiaries.

Differentiator

Problem solved

Functional benefit

Products and services

• Silicon Wafer Regeneration (シリコンウェーハ再生加工) Regeneration and reprocessing of used monitor and dummy silicon wafers for global semiconductor manufacturers. Uses proprietary Cu-removal technology with high resistance to metal impurities and minimum-polishing technology that minimizes material removal per regeneration cycle, increasing the number of regeneration cycles and extending wafer lifecycle. Reclaimed wafers achieve cleanliness levels comparable to new wafers while reducing CO2 emissions to approximately 1/9th of new wafer production.
• Prime Silicon Wafer Manufacturing and Sales (プライムシリコンウェーハ製造販売) Manufacturing and sales of 125mm (5-inch), 150mm (6-inch), and 200mm (8-inch) prime silicon wafers through subsidiary Shandong GRITEK, primarily for power semiconductor manufacturing. 12-inch prime wafer mass production R&D is conducted via SGRS joint venture.
• Semiconductor Manufacturing Equipment Consumables (半導体製造装置向け消耗部材製造販売) Manufacturing and sales of quartz glass, monocrystalline and polycrystalline silicon products for semiconductor manufacturing equipment, supplied through subsidiary DG Technologies with precision silicon processing and tight dimensional tolerances. Operations span the Kamisu HQ factory and the Kurihara Factory (second production base, completed June 2022).
• Laser Diode Sales Agency (Laser Diode販売) Overseas sales agency for Foxconn Fukuyama Technologies' Laser Diodes. Distributes the world's only RGB Full Line Up laser diode products in international markets, leveraging 38+ years of Foxconn Fukuyama mass production experience. Applications include Levelers, Garden Lights, and Projectors.
• Ultrasound Imaging Device Sales Agency (超音波映像装置販売) Overseas sales agency for Hitachi Power Solutions' ultrasound imaging devices. Distributes non-destructive inspection devices internationally that can detect delamination, voids, and cracks that X-ray inspection cannot identify.
• Renewable Energy - VRFB Electrolyte (再生可能エネルギー事業) Manufacturing and supply of vanadium electrolyte solution for Vanadium Redox Flow Batteries (VRFB) through subsidiary LE System, targeting large-scale stationary energy storage for wind and solar power generation. VRFB circulates vanadium electrolyte for charge/discharge, supporting renewable integration.
• Semiconductor Equipment Trading (半導体関連装置買取・販売) Purchase and sale of semiconductor production equipment, with transportation and setup services included. Enables fabs to resell or acquire pre-owned equipment.
• Silicon Wafer Oxide Film Deposition Processing (シリコンウェーハ酸化膜成膜加工) Oxide film deposition processing services performed on customer-supplied wafers and on wafers that have undergone regeneration processing, providing added-value wafer finishing for semiconductor customers.
• Silicon Wafer Sales (シリコンウェーハ販売) Sales of monitor wafers and dummy wafers adapted to customer needs, including oxide film-attached wafers for semiconductor manufacturing applications.
• Technical Consulting Services (技術コンサルティング事業) Technical consulting services for semiconductor wafer manufacturing processes, including technical guidance and education services for customer fab teams.
• Solar Power Generation (太陽光発電事業) Solar power generation at the Sanbongi Factory site in Osaki, Miyagi, with 1.5MW maximum capacity, operational since October 2013, leveraging factory rooftop space efficiently.

Quantifiable outcome

• CO2 emissions from reclaimed wafer production are approximately 1/9th of new wafer production
• +3 more outcomes

Segments2 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• 山東省徳州市政府 (Shandong Province Dezhou City Government)coreStrategic or Co-development Partner · 1 December 2019Four-party joint venture agreement signed in December 2019 between GRINM, Dezhou Huidui Semiconductor Equity Investment Fund, Dezhou City Government, and RS Technologies for the establishment of SGRS and expansion of prime wafer manufacturing in Dezhou.
• 株式会社DG Technologies (DG Technologies Co., Ltd.)coreStrategic or Co-development Partner · 1 January 2019RS Technologies acquired 100% of DG Technologies in January 2019, entering the market for consumable components for semiconductor manufacturing equipment. DG Technologies specializes in quartz glass and silicon precision processing.
• 株式会社ユニオンエレクトロニクスソリューション (Union Electronics Solution Co., Ltd.)coreStrategic or Co-development Partner · 1 May 2018RS Technologies acquired 100% of Union Electronics Solution in May 2018, a special dealer of Hitachi Power Devices, expanding the company's semiconductor-related business.
• 有研科技集団有限公司 (GRINM)coreStrategic or Co-development Partner · 1 December 2017RS Technologies entered into a three-party joint venture agreement with GRINM and Fujian Cangyuan Investment Co., Ltd. in December 2017 to establish Beijing Youyan RS Semiconductor Technology Co., Ltd. (BGRS) and pursue the acquisition of GRITEK as a consolidated subsidiary.
• 福建倉元投資有限公司 (Fujian Cangyuan Investment Co., Ltd.)coreStrategic or Co-development Partner · 1 December 2017Three-party joint venture partner with GRINM for the establishment of BGRS and the GRITEK acquisition in China.
• フォックスコン福山テクノロジーズ株式会社 (Foxconn Fukuyama Technologies Co., Ltd.)coreChannel Partner/ Reseller/ DistributorRS Technologies acts as the overseas sales agent for Foxconn Fukuyama Technologies' Laser Diodes, distributing RGB full lineup laser diode products internationally. These products are used in Leveler, Garden Light, and Projector applications with 38+ years of mass production experience.
• 日立パワーソリューションズ株式会社 (Hitachi Power Solutions Co., Ltd.)coreChannel Partner/ Reseller/ DistributorRS Technologies acts as the overseas sales agent for Hitachi Power Solutions' Ultrasound Imaging Devices, distributing these non-destructive inspection devices internationally. The devices can detect delamination, voids, and cracks that X-ray inspection cannot identify.
• シャープ総合開発センター (Sharp Sogo Development Center)minorOthersRS Technologies leases office space at Sharp's Sogo Development Center in Tenri, Nara, where it operates its Tenri Center on the 3rd floor of Building B.

Scale indicators10 records

Recent moves11 records

Expansion highlights6 records

Emerging players

• Soitec: Specialty wafer manufacturer focused on SOI and engineered substrates for advanced semiconductor applications. Comparable to RS Technologies in advanced wafer technology development, particularly relevant to the 12-inch prime wafer roadmap.

Broad incumbents

• Entegris: Diversified semiconductor materials and equipment supplier with wafer handling, filtration, and consumables products. Comparable to RS Technologies' consumables segment (DG Technologies) and broader materials portfolio serving fab customers.

Direct peers

• GlobalWafers: Major global silicon wafer producer with operations across Asia, Europe, and North America. Direct peer for prime wafer manufacturing and competes for the same semiconductor manufacturers that RS Technologies serves.
• Shin-Etsu Chemical: Global leader in silicon wafer manufacturing through its electronic materials division. Direct competitor to RS Technologies' prime wafer business and shares the same end-customer base of major chip manufacturers.
• Tosoh Quartz: Manufacturer of high-purity quartz components for semiconductor fabrication equipment. Direct competitor to RS Technologies' DG Technologies subsidiary in the semiconductor equipment consumables market.
• Siltronic AG: Pure-play silicon wafer manufacturer supplying 300mm and smaller diameter wafers to leading chipmakers. Comparable to RS Technologies in prime wafer manufacturing and reclaim-adjacent wafer processing services.
• SUMCO Technology: Subsidiary operations of SUMCO focused on wafer reclamation and related services. Direct peer to RS Technologies' wafer reclaim business, competing for the same global chipmaker customer base.
• SUMCO Corporation: One of the world's largest silicon wafer manufacturers serving logic, memory, and power semiconductor customers. Direct peer to RS Technologies' prime wafer and reclaim operations, competing in the same wafer value chain.

Regional players

• National Silicon Industry Group (NSIG): Major Chinese silicon wafer manufacturer competing with RS Technologies' Shandong GRITEK subsidiary in the China prime wafer market. Both companies target Chinese semiconductor manufacturers with localized wafer supply.
• Shanghai Simgui Technology: China-based silicon wafer manufacturer with SOI and epitaxial wafer capabilities. Regional competitor to RS Technologies' China operations addressing similar Chinese semiconductor customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/rs-technologies-co-ltd

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries14 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 RS Technologies