Producer
Dowa Holdings Co., Ltd.
DOWA Holdings Co., Ltd. (Tokyo; TSE: 5714; formerly Dowa Mining) is Japan's largest indium producer, commanding an estimated 12% global market share. DOWA produces high-purity indium (up to 99.9999% / 6N) at its Kosaka Smelting & Refining facility in Akita Prefecture, Japan — recovering indium as a byproduct of zinc, copper, and lead smelting from Kuroko-type polymetallic ore. DOWA also processes electronic scrap (e-waste) at its Akita Eco Smelting subsidiary for secondary indium recovery. DOWA Electronics Materials (a DOWA subsidiary) was Japan's largest indium supplier for ITO sputtering targets as of 2010 and remains a primary Japanese supplier to flat-panel display manufacturers. DOWA's dual primary+secondary recovery model gives it resilience against zinc market downturns.
2
Inputs supplied
0
Goods downstream
2
Facilities
0
Stories
What they make
2 inputs Dowa Holdings Co., Ltd. supplies
Click an input to see every good that depends on it, every country that produces it, and every other company in the supply chain.
Where they make it
2 facilities
DOWA Kosaka Smelting & Refining (Akita) →
JPKosaka-machi, Kazuno-gun, Akita Prefecture · smelter
DOWA's Kosaka Smelting & Refining Co., Ltd. in Kosaka, Akita Prefecture — the historic heart of DOWA's mining operations (the company began in Kosaka over 130 years ago mining Kuroko ore). The facility recovers indium, gold, silver, and antimony from polymetallic ores and electronic scrap. DOWA's Akita-based operations (Kosaka Smelting + Akita Zinc + Akita Eco Smelting) collectively make Akita Prefecture Japan's primary indium production center. DOWA had ~12% global indium market share as of 2025. Source: DOWA Holdings CSR reports; Chemical Research Insight.
Kosaka Smelting & Refining Co., Ltd. →
JPKosaka, Akita Prefecture, Japan · smelter
Dowa Holdings subsidiary. Recovers 22 metals from copper concentrates and e-scrap, including selenium. Switched to TSL furnace 2008. Contributes to Japan's ~19% global Se share.
What else they do
Business segments
The company's full revenue map — where this supply-chain role fits within their broader business.
Nonferrous Metals Smelting
40%Eco-Systems (E-Waste Recycling)
25%Electronic Materials
20%Heat Treatment & Other
15%
Intelligence
What's known
Sourced claims about this company's role in supply chains — chokepoints, concentration, incidents, dual-use connections.
Origin2023
DOWA Holdings (formerly Dowa Mining Co.) is simultaneously the world's leading Japanese indium producer (~12% global market share) from primary zinc smelting, Japan's largest e-waste recycler recovering secondary indium from discarded ITO glass, and a specialty metal powders supplier for electronics manufacturing. DOWA's Akita Prefecture Kosaka facility processes Kuroko-type (massive sulfide) ore that naturally contains zinc, copper, lead, and trace indium — producing primary indium as a zinc smelting byproduct. DOWA's Akita Eco Smelting subsidiary separately recovers secondary indium from ITO (indium tin oxide) waste glass from LCD panel manufacturing. Both primary (zinc ore smelting) and secondary (LCD glass recycling) indium recovery operations occur within DOWA's Akita industrial complex — the same address provides both the geological and the circular economy source of indium for smartphone display supply chains.
DOWA Holdings Co., Ltd. ↗