Circular 

regeneration

for a sustainable 

future.

循環再生，邁向永續未來

Transforming
by Responsibility

以責任為核心，推動產業革新與永續未來

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Pioneering Circular Economy, 
Leading a New Future of Resource Reuse

Transforming steel by-products into renewable construction materials through technology and responsibility.

Taiwan Steel Union is dedicated to resource recycling in the electric arc furnace steelmaking industry. Through advanced rotary kiln smelting technology, we recover valuable metals such as zinc and lead from dust, producing crude zinc oxide for the smelting and chemical sectors.

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Resource Recycling
Efficient Technologies
Zero Waste Ecosystem
Toward a Green Future

ESG

Sustainable Steel Union, Circular Future

From resource recycling to carbon management, we realize a shared vision for industry and the environment.
Discover
Climate change adaptation
CDP 2024 Climate Change Questionnaire

The first domestic waste recycling company to obtain

Circular Economy Leader
MoEnv | Excellent Enterprises

Awarded the highest honor in resource recycling, the “Gold Medal,” in 2025.

Resource Regeneration
UL 2809 Recycled Material Content Verification

The product contains 100% zinc oxide, a first in the global industry.

Carbon reduction transition
Dual Carbon Mark Certification

We have obtained ISO 14067 carbon footprint and environmental label certification and are actively implementing carbon management.

Green manufacturing
Obtain carbon footprint certification

Promote resource regeneration through low-carbon processes and build a green manufacturing system.

Energy conservation and emission reduction
Carbon emissions reduced by 32%, NOx emissions reduced by 23%.

The long-term implementation of energy conservation and air pollution reduction strategies has yielded remarkable results.

循環經濟領袖
TCSA 永續典範

台灣永續投資獎，肯定循環經濟領導地位

永續獎項肯定
企業永續報告金獎

連續榮獲循環經濟領袖獎，治理評鑑大幅進步

綠建材
綠建材標章

導入第三方標準強化產品永續性與市場信任。

節能減排
減碳 32%、NOx 減排 23%

長期落實節能與空污減排策略，成效顯著。

OUR CORE

Rotary Kiln Process
High-temperature treatment of dust to extract valuable zinc resources.
Reusable Waste
Recycling and reusing zinc-containing by-products.
Taiwan Steel Resources
Lushi Stable Chemical Plant
Crude Zinc Oxide
Export-grade crude zinc oxide with an annual output of over 50,000 tons.
Financial Report
Transparent Operational Results to Strengthen Investor Trust
ESG Corporate Social Responsibility
Sustainability Report
Env. Monitoring Reports
Main monitoring categories and sampling frequencies include
ESG Questionnaire
Questionnaire survey