ABOUT US
ABOUT US
Empowering Excellence
We Lead Global Change As We Advance Technology
We Lead Global Change As We Advance Technology

ABOUT US
Empowering Excellence
We Lead Global Change As We Advance Technology

Who We Are
Committed to building a sustainable
and high-performance future
Committed to building a sustainable and high-performance future
Committed to building a sustainable
and high-performance future
OCI TerraSus, formerly known as OCI M, is a Malaysia-based subsidiary of OCI Holdings Company Ltd., a global leader in green energy and advanced chemical materials headquartered in Seoul, South Korea…
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OCI TerraSus, formerly known as OCI M, is a Malaysia-based subsidiary of OCI Holdings Company Ltd., a global leader in green energy and advanced chemical materials headquartered in Seoul, South Korea…
Read more

OCI TerraSus, formerly known as OCI M, is a Malaysia-based subsidiary of OCI Holdings Company Ltd., a global leader in green energy and advanced chemical materials headquartered in Seoul, South Korea…
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Clean hydro energy
Clean hydro energy
Clean hydro energy
Our polysilicon is produced sustainably through clean hydropower energy.
Our polysilicon is produced sustainably through clean hydropower energy.
Our polysilicon is produced sustainably through clean hydropower energy.

Green Catalyst
Green Catalyst
Green Catalyst
Polysilicon is essential in the solar value chain, crucial for producing solar photovoltaic (PV) systems.
Polysilicon is essential in the solar value chain, crucial for producing solar photovoltaic (PV) systems.
Polysilicon is essential in the solar value chain, crucial for producing solar photovoltaic (PV) systems.
What We Do
Delivering high-purity polysilicon
for a cleaner, smarter world
Delivering high-purity polysilicon for a cleaner, smarter world
Delivering high-purity polysilicon
for a cleaner, smarter world
10-Nine
10-Nine
10-Nine
High-purity solar
grade polysilicon
OCI TerraSus produces ultra-high-purity polysilicon used in solar photovoltaic panels. Our manufacturing facility in Samalaju Industrial Park operates on 100% renewable hydropower, ensuring a stable and sustainable supply chain…
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OCI TerraSus produces ultra-high-purity polysilicon used in solar photovoltaic panels. Our manufacturing facility in Samalaju Industrial Park operates on 100% renewable hydropower, ensuring a stable and sustainable supply chain…
Read more

OCI TerraSus produces ultra-high-purity polysilicon used in solar photovoltaic panels. Our manufacturing facility in Samalaju Industrial Park operates on 100% renewable hydropower, ensuring a stable and sustainable supply chain…
Read more




Polysilicon Manufacturing Process



Polysilicon Manufacturing Process



Polysilicon Manufacturing Process
Message by CEO
For nearly a decade, OCI TerraSus has remained committed to building a sustainable and future-ready industrial ecosystem. Leveraging the strengths of our group, we continue to explore opportunities in the renewable energy sector and expand into advanced materials.
Our growth in semiconductor-grade polysilicon, chemicals and industries which support the global energy transition has been enabled by forward-looking policies, strategic global partnerships and operational and sustainability-driven expertise of our team. These advantages position us to meet our customers' evolving needs across the global markets…
Read more

For nearly a decade, OCI TerraSus has remained committed to building a sustainable and future-ready industrial ecosystem. Leveraging the strengths of our group, we continue to explore opportunities in the renewable energy sector and expand into advanced materials.
Our growth in semiconductor-grade polysilicon, chemicals and industries which support the global energy transition has been enabled by forward-looking policies, strategic global partnerships and operational and sustainability-driven expertise of our team. These advantages position us to meet our customers' evolving needs across the global markets…
Read more

For nearly a decade, OCI TerraSus has remained committed to building a sustainable and future-ready industrial ecosystem. Leveraging the strengths of our group, we continue to explore opportunities in the renewable energy sector and expand into advanced materials.
Our growth in semiconductor-grade polysilicon, chemicals and industries which support the global energy transition has been enabled by forward-looking policies, strategic global partnerships and operational and sustainability-driven expertise of our team. These advantages position us to meet our customers' evolving needs across the global markets…
Read more

Jaeyong Yang
President | Chief Executive Officer
Jaeyong Yang
President
Chief Executive Officer
Jaeyong Yang
President | Chief Executive Officer



Business Strategy
Driving resilient, responsible growth
through global partnerships & local impact
Driving resilient, responsible growth through global partnerships & local impact
Driving resilient, responsible growth
through global partnerships & local impact
Our growth is anchored in robust governance, proactive stakeholder engagement, and a clear commitment to transparency and accountability. We align our operations with global standards to create long-term value for our partners and stakeholders…
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Our growth is anchored in robust governance, proactive stakeholder engagement, and a clear commitment to transparency and accountability. We align our operations with global standards to create long-term value for our partners and stakeholders…
Read more

Our growth is anchored in robust governance, proactive stakeholder engagement, and a clear commitment to transparency and accountability. We align our operations with global standards to create long-term value for our partners and stakeholders…
Read more

Future Driven Materials
Delivering high-purity polysilicon for the global semiconductor and solar markets through world-class manufacturing in Malaysia.
Green Energy Integration
Harnessing Sarawak’s hydropower to realize a clean, low-carbon production ecosystem.
Transparent Governance & Partnerships
Building joint ventures with trusted global and local partners to pursue long-term growth with shared responsibility.
Community Engagement
Supporting local talent, education, and economic development as a responsible investor.
Agile Risk Management
Responding proactively to global market changes, trade dynamics, and environmental regulations.

Future Driven Materials
Delivering high-purity polysilicon for the global semiconductor and solar markets through world-class manufacturing in Malaysia.

Green Energy Integration
Harnessing Sarawak’s hydropower to realize a clean, low-carbon production ecosystem.

Transparent Governance & Partnerships
Building joint ventures with trusted global and local partners to pursue long-term growth with shared responsibility.

Community Engagement
Supporting local talent, education, and economic development as a responsible investor.

Agile Risk Management
Responding proactively to global market changes, trade dynamics, and environmental regulations.
Three Pillars of Excellence
Central to our strategy are three foundational pillars that define our identity and drive our performance
Central to our strategy are three foundational pillars that define our identity and drive our performance
Central to our strategy are three foundational pillars that define our identity and drive our performance
Center of Excellence
Operational Excellence
Empowering Excellence

Center of Excellence


Operational Excellence


Empowering Excellence

Awards
Awards
Awards
Prestigious recognition and awards
Prestigious recognition
and awards
Prestigious recognition and awards

Bintulu Sustainability Awards (BiSA) 2024
Platinum Award | Large Enterprise Category

Bintulu Sustainability Awards (BiSA) 2024
Platinum Award | Large Enterprise Category

Bintulu Sustainability Awards (BiSA) 2024
Platinum Award | Large Enterprise Category

11th Premier of Sarawak Environmental Award (PSEA) 2023/2024
Gold Award | Large Enterprise/GLC Category

11th Premier of Sarawak Environmental Award (PSEA) 2023/2024
Gold Award | Large Enterprise/GLC Category

11th Premier of Sarawak Environmental Award (PSEA) 2023/2024
Gold Award | Large Enterprise/GLC Category