Toray Industries Inc
3402.TMEDIUMScore: 40.3Battery Materials / Li-ion Separator (Premium) · Weight: 2%· Data as of 2026-05-20
Investment Thesis
Toray's Setela polyethylene separator film is used in high-performance Li-ion cells, with a confirmed supply relationship with LG Chem (now repositioned as Toray's primary separator customer after selling the Hungary JV stake to LG Chem in Oct 2025). LG Energy Solution — which signed an MoU with Honda (May 2026) to deploy battery swapping infrastructure in Vietnam — sources cylindrical cell separators from Toray's Japan operations. Toray is deliberately repositioning away from commodity separator production toward high-value, high-safety applications. PB ratio of 0.9x (below book value) offers rare entry into a quality industrial with a FY2027 operating income guidance of ¥160B vs. implied ~¥80-90B in FY2026, representing near-doubling of operating profit. Carbon fiber (Torayca) and water filtration membrane divisions provide additional structural growth.
Risk
Toray is a large conglomerate (¥2,585B revenue); battery separator is a meaningful but not dominant segment. If LG Energy Solution develops in-house separator capability (possible given the JV restructuring), Toray loses a key customer. Solid-state battery transition (post-2028) could displace liquid-electrolyte separators entirely. Operating margin at 5% vs. industry 10% average reflects ongoing structural repositioning — if turnaround stalls, recovery is delayed.
Monitoring Trigger
Add on confirmation that FY2027 H1 operating income runs at ¥75B+ annualized pace (implies thesis on track). Trim if FY2027 guidance is revised down at Q1 results. Watch for LG Energy Solution supply contract announcements.
Key Dates
Key Metrics
Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Fibers & Textiles | |||
| Performance Chemicals (inc. separator) | |||
| Carbon Fiber Composites | |||
| Environment & Engineering |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| inferred | LG Energy Solution (Korea) → Honda Motor Vietnam MPP | Setela polyethylene separator film for cylindrical Li-ion cells used in Honda Mobilepower Pack e: battery swapping | Toray had a JV with LG Chem for separator production; sold Hungary stake to LG Chem in Oct 2025 while retaining Japan/Korea operations. LG Energy Solution (Honda's confirmed Vietnam MPP partner) sources cylindrical cell separators through this historical relationship. Honda + LG Energy Solution signed Vietnam battery swapping MoU May 2026 targeting Hanoi pilot with ~500 EVs and 50 swap stations in Q3 2026. |
| probable | Major European EV battery manufacturer (unnamed) | Setela separator — high-value/high-safety applications long-term supply contract | Toray signed long-term separator supply contract with a major European EV battery manufacturer in Q2 2025. Customer not publicly named. Toray is repositioning toward premium separator applications after selling commodity Hungary production. |
| confirmed | LG Chem (Korea) | Joint separator plant (Hungary) — sold Oct 2025 stake to LG Chem for $206M | Toray sold its 50% stake in Hungary separator JV to LG Chem in Oct 2025. This is a strategic exit from commodity production, not distress. Toray retains separator operations in Japan and Korea focused on high-value applications. |