HSK
HSK is a Yokohama-based, Tokyo Stock Exchange-listed precision manufacturer (EDM machining, molds, surface treatment) that launched ARINARU in September 2026, a material brand turning wood biomass and microalgae byproducts into design products via heat-press molding and pellet-fed 3D printing.
- CEO / Founder
- Chikara Murata (村田力)
- Team Size
- 501-1000
- Stage
- Public
- Latest Round
- Post-IPO
Technology & Products
Key Products
ARINARU material brand (biomass/algae composite design materials, pellet 3D printing and heat-press molded products); MF-type mixed-melting (MF式混合溶融) compounding equipment and recycled/biomass plastic composites; core legacy business: EDM contract machining, gas turbine and aircraft engine parts, molds (aluminum extrusion dies, ceramic honeycomb extrusion dies), chrome-free surface treatment (ZECCOAT), digital servo presses.
Technological Advantage
Proprietary MF-type mixed-melting (MF式混合溶融) technology - heater-free, high-speed rotational mixing that heats/pressurizes materials via friction to blend recycled/biomass plastics without degrading them; recognized with MF Technology Award 2022-2023 and the 29th Sokeizai Industry Technology Award (METI Minister's Award).
Differentiation
Value Proposition
Converts underutilized biomass and algae-derived feedstock into design materials for products (planters, furniture, exhibition fixtures, hotel amenities) using proprietary MF mixed-melting compounding technology combined with heat-press molding and pellet 3D printing, treating batch variability as a design feature rather than a defect to be engineered out.
How They Differentiate
Positions batch-to-batch material inconsistency (grain, color, flow variation typical of recycled/biomass feedstock) as an intentional design signature rather than a defect to be eliminated, avoiding the QC costs that have stalled prior biomass-composite commercialization efforts; combines material development, molding trials, prototyping, product design and manufacturing in one integrated program.
Market & Competition
Target Customers
Corporations, municipalities, designers, and architecture/design firms seeking sustainable, circular-economy materials and products; also long-standing industrial contract-manufacturing clients (aerospace, automotive, energy, transport).
Industry Verticals
Aerospace, transportation/automotive, industrial machinery, energy, housing/interior, and (via ARINARU) design/architecture, hospitality, and sustainable materials/circular economy.
Competitors
ExtraBold Inc. (Japan pellet 3D printing with sustainable/recycled materials); System Create Co., Ltd. (ranked #1 pellet 3D printer maker in Japan per Metoree); Chitose Bio Evolution (algae-biomass 3D printing material development).
Growth & Milestones
Growth Metrics
Consolidated headcount 752 / non-consolidated 573 (as of Feb 2026); capital ¥1.889 billion; ~300 major client companies across aerospace, automotive, and industrial sectors; reported record profit with upward revision to full-year forecast (Kabutan, July 2026).
Major Milestones
1961: Founded as EDM specialist; 2013: Listed on Tokyo Stock Exchange (Standard Market, ticker 6469); 2021: Began recycled/biomass plastic composite R&D using MF mixed-melting technology; 2023: Chikara Murata appointed President; won MF Technology Award 2022-2023 and 29th Sokeizai Industry Technology Award (METI Minister's Award); 2025: Collaborated with S.Lab on 'Sokaku' pellet-printed installation for Japan Pavilion at Expo 2025 Osaka-Kansai; Sept 1, 2026: Launched ARINARU material brand combining heat-press molding and pellet 3D printing.
Notable Customers
IHI, Ebara Elliott, Kawasaki Heavy Industries, Kobe Steel, Denso, Toshiba, Toyota Motor, NGK, Honda Motor, Marelli, Mitsubishi Heavy Industries, Mitsubishi Heavy Industries Aero Engines, UACJ, LIXIL
Recent coverage of HSK
AM patents
AM-relevant patents linked to this company.
- Patents
- 2
- Granted
- 0
- Families
- 2
Leading domains: equipment (2), material (2), process (2)
Filings by year: 2014: 2
- 3D MOLDING DEVICE2015194398 · WO
- 3D MOLDING DEVICE2015194399 · WO