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W-SCOPE
W-SCOPE Corporation (ダブル・スコープ株式会社) develops and manufactures membrane films, including separators for lithium-ion secondary batteries. The company builds core...
W-SCOPE
W-SCOPE Corporation (ダブル・スコープ株式会社) develops and manufactures membrane films, including separators for lithium-ion secondary batteries. The company builds core membrane film technology and production systems to meet customer needs with high productivity and proprietary know-how, aiming to be No.1 in the global separator market. Its products are used in PCs, smartphones, electric vehicles, and energy storage, with EV applications as a main sales target.
General information
Firm type
Corporate Investor
Year founded
2005
Location
Region
Asia
Country
Japan
City
Tokyo
Corporate office
8F Gotanda Sakura Building, 1-22-6 Higashi-Gotanda, Shinagawa-ku, Tokyo, 141-0022, Japan
Additional offices
Nyíregyháza, Hungary · Cheongju-si, South Korea · Chungju-si, South Korea
Principals
Choi Won-kun
Founder, President and CEO
Sector focus
Frequently asked questions
Who runs investment and capacity-allocation decisions at W-SCOPE?
Choi Won-kun makes the final call as Founder, President and CEO. He sets the multi-year capex roadmap that determines which production lines get built and when. The board of directors, which includes external auditors in the Japanese governance model, approves major capital raises and plant-expansion budgets. Day-to-day project execution falls to the plant general managers in South Korea and Hungary under Choi's direct supervision.
How does W-SCOPE source its deal flow — or does it even have deal flow?
W-SCOPE does not source external deals in the traditional allocator sense. Its 'deal flow' consists of supply contract negotiations with battery cell manufacturers such as Samsung SDI, LG Energy Solution, and SK On, which trigger capacity-expansion investment decisions. The firm also evaluates upstream partnerships, such as its lithium extraction collaboration with POSCO, as production-input plays rather than financial investments.
Does W-SCOPE invest in external funds or startups?
No. W-SCOPE invests almost exclusively in its own manufacturing lines, plant construction, and upstream process technology. When it participates with co-investors such as EVO FUND, it is the recipient of capital — the firm issues shares or equity-linked instruments to fund its own expansion, rather than deploying capital into third-party funds.
What is W-SCOPE's posture on co-investment alongside external partners?
W-SCOPE takes the opposite side of the co-investment relationship: it receives co-investment from strategic and financial partners for specific projects. The POSCO collaboration on lithium extraction and the equity raises with EVO FUND are examples where W-SCOPE contributes operating knowledge and production assets while partners provide capital or upstream materials. It does not co-invest as an LP in external GPs.
Which sectors does W-SCOPE explicitly avoid?
W-SCOPE does not invest outside the lithium-ion battery supply chain. It has no exposure to software, consumer technology, healthcare, or real estate. Even within energy transition, it does not invest in battery cell manufacturing, charging infrastructure, or battery recycling — it stays narrowly focused on the polymer separator film niche that sits between the anode and cathode inside every lithium-ion cell.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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