Metal surface treatment / Sagamihara, Kanagawa
Fuji WPC Co., Ltd.
株式会社不二WPC / 不二WPC株式会社
Fuji WPC Co., Ltd. is a contract metal surface treatment company in Sagamihara, Kanagawa, Japan. Founded in 1997, it offers WPC Treatment® (fine particle peening), DLC coating, Micro Dimple Treatment®, 3D Lapping® and short-pulse laser processing, and accepts orders from a single piece. ISO 9001 certified; inquiries in English are welcome.
Capabilities
"What the company does"| Item | Details |
|---|---|
| Key technologies | WPC Treatment®, DLC coating, Super DLC coating, Hyper Mori Shot®, Molybdenum disulfide shot, 3D Lapping®, Short-pulse laser processing, Micro Dimple Treatment®, Manganese phosphate coating |
| Process categories | Shot peening, Coating (PVD/DLC), Polishing / Lapping |
| Materials | Aluminum, Various metals (automotive parts, molds, blades, cutting tools, etc.). Aluminum alloys are also handled through combined treatment with DLC. |
| Minimum lot | From 1 pc |
| Services | Short lead time |
| Industries | Automotive, Mold / Die, Food / Packaging, Medical devices |
| Quality & certifications | DLC-F&D: FDA certified, Numerous Japanese patents, including for Micro Dimple Treatment®, ISO 9001 obtained in March 2005 (ISO 9001:2000) |
| Overseas support | English inquiry OK, 2005: established the US subsidiary WPC Treatment Co., Inc in Los Angeles |
| Service area | All of Japan (parts are shipped in and returned after processing) |
Relationship to the developers of WPC Treatment
"Which Fuji?"“WPC処理” (WPC Treatment) is Japanese trademark registration No. 3081805 (registered 1995, renewed 2025; Class 40: blasting and shot peening), held jointly by three companies: Fuji Kihan Co., Ltd. (Nagoya), Fuji Manufacturing Co., Ltd. (Edogawa, Tokyo) and Fuji WPC Co., Ltd. (Sagamihara). The technology was jointly developed by Fuji Manufacturing and Fuji Kihan. Fuji WPC Co., Ltd. was established on 15 April 1997 as a contract processing base in the Kanto region, jointly funded by these two patent-holding companies (Fuji Kihan 26%, Fuji Manufacturing 25%) to promote WPC Treatment® and develop its applications. Of the companies with “Fuji” in their names that are often mixed up in English-language searches, this page describes Fuji WPC Co., Ltd. in Sagamihara, Kanagawa.
Technical terms
"Terms, defined"- WPC TreatmentRegistered trademark
- A surface modification technique that blasts micrometre-scale particles onto metal at high speed. It forms compressive residual stress and micro-dimples on the surface, improving fatigue strength and sliding properties.
- DLC coating
- A technique that forms a thin diamond-like carbon film on metal to reduce friction. Combining it with WPC Treatment improves adhesion.
- 3D LappingRegistered trademark
- A polishing method using media made of rubber-based particles coated with fine diamond particles, which polishes three-dimensional shapes with minimal effect on the substrate. Combined with WPC Treatment, it gives a smoother surface.
- Micro Dimple TreatmentRegistered trademark
- A treatment that forms many tiny depressions on a metal surface. The company reports an antibacterial effect (antibacterial activity value of 3 or higher) confirmed in a JIS test by the Kanagawa Institute of Industrial Science and Technology (KISTEC).
FAQ
"Direct answers"What is the difference between WPC Treatment and DLC coating?
WPC Treatment modifies the surface itself by blasting fine particles, raising fatigue strength and sliding performance. DLC coating adds a thin film to reduce friction. Fuji WPC also offers both as a combined treatment.
What is the minimum order quantity?
Orders are accepted from a single piece.
Can you treat aluminum parts?
Yes. Aluminum is handled through combined treatment with DLC.
Can I inquire from overseas?
Yes. Inquiries in English are welcome.
Which areas do you serve?
Orders are accepted from anywhere in Japan. Parts are shipped to the company and returned after processing.
Equipment
"Evidence of capability"Processing equipment
- WPC treatment machines ×21
- Large WPC (MD) treatment machine ×1 (up to 3000 × 3000 mm)
- Plasma CVD system ×1
- Precision lapping machines ×6
- Short-pulse laser processing machine ×1
- Vacuum heating furnace ×1
Analysis & measurement
- Scanning electron microscope (SEM)
- Laser microscope
- Digital microscopes ×3
- Compressive residual stress analyzers ×2
- Ball-on-disc friction and wear testers ×2
- Reciprocating wear tester
- Static friction coefficient tester
- Vickers hardness tester
- Rockwell hardness tester
- Film thickness gauge
Awards
"External recognition"- Monozukuri Nippon Grand Award, Excellence Award (5th)
- Japanese Society of Tribologists Technical Award (FY2013)
- Iwaki Prize, Excellence Award (9th)
- Tama Blue-Green Award, Tama Blue Award Grand Prize (15th)
- Kanagawa Industrial Technology Development Grand Prize (27th)
- Kanagawa Ganbaru Kigyo Ace (FY2017)
- Kanagawa Standard (FY2011)
- Nine Prefectures and Cities “Shining Industrial Technology” (FY2011)
- 300 Vibrant Monozukuri Companies (selected 2009)
- JSME Kanto Branch Kanagawa Block Technology Award
Company overview
| Company name | Fuji WPC Co., Ltd. / 株式会社不二WPC / 不二WPC株式会社 |
|---|---|
| Founded | April 1997 |
| History | Established 15 April 1997 (jointly funded by the two patent-holding companies, Fuji Kihan 26% and Fuji Manufacturing 25%, as a Kanto base to promote WPC Treatment® and develop its applications). 2009: head office moved to the Sia Kanagawa Industrial Park. 2011: affiliate 株式会社フリクション (Friction) established. 2019: food-related division spun off as Surf Technology Co., Ltd. |
| Address | 4-1-83 Onodai, Minami-ku, Sagamihara, Kanagawa 252-0331, Japan |
| Representative | Eiji Shimodaira (President) |
| Capital | Capital: JPY 10 million |
| Business segments | Motorsports / Industrial / Food & medical / Sports, decorative & cosmetic finishes |
| Group companies |
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| Media appearances | Appeared on NHK General TV “Chōzetsu Sugowaza!” (2016), NHK WORLD-JAPAN (2024) and BS TV Tokyo (2025) |
| Official website | www.fujiwpc.co.jp |
Processes
"Process pages"Contact this company
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