Confidence in GC’s business stems from a fully integrated foundation that spans the entire value chain, creating a sustainable competitive advantage.

GC stands out not only for its over 35 years of experience in the petrochemical and chemical industries, but also for its robust, fully integrated business structure that spans the entire value chain - from raw materials to finished products, through five core business groups that are strategically connected and mutually reinforcing to enhance overall competitiveness.

1. Fundamental Business Segment – The Foundation of Strength

GC’s Refinery and Aromatics as well as Olefins and Derivatives businesses form the core of its petrochemical production and serve as the starting point of the entire value chain. This strong foundation enables GC to effectively control costs and ensure the quality of raw materials, reinforcing its competitive advantage from the ground up.

2. Intermediate Business Segment – Petrochemical Intermediates That Add Value to Raw Materials

GC focuses on enhancing the value of olefins products while meeting the diverse needs of industries and consumers more comprehensively, as well as reducing import dependence. The company is also Thailand’s first and only producer of ethylene oxide and its derivatives, along with phenol products, which are essential raw materials for engineering plastics used in the automotive, electrical, electronics, and construction industries. These products are further developed into textile materials such as polyester fibers and PET resins, which are used in packaging applications including bottles and food containers.

3. Polymer and Chemicals Business Segment; Advancing Toward Comprehensive Solutions

GC is a leader in the integrated plastic resin business, offering a wide range of high-quality downstream polymer products such as PE, PP, PS, and ABS, which serve key industries including packaging, automotive, and electrical appliances. The company is also moving toward becoming a total solution provider through the development of specialty resins and global partnerships.

In the chemicals segment, GC produces key substances such as ethanolamines, used in consumer products, and polyols for the polyurethane industry, supporting applications that span both industrial and everyday life.

4. Bioplastics and Sustainable Products Segment – Shaping the Future with Sustainable Value

• This forward-looking business aligns with global sustainability trends while ensuring long-term returns, connecting natural resources, recycled plastics, vegetable oils, and clean energy in support of the BCG (Bio-Circular-Green) Economy and helping to minimize environmental impact.
• Bioplastics – Made from natural raw materials such as sugarcane, cassava, and corn, these materials add value to agricultural products by transforming them into high-value, biodegradable plastics.
• Post-Consumer Recycled (PCR) Resins – Convert used plastics into high-quality, clean, and safe recycled resins that meet international standards.
• Value Added Oleochemicals (VAO) – Enhance the value of plant- and animal-based fats into a wide range of downstream industries, including clean fuels like gasohol, surfactants used in cleaning products, and pharmaceutical and medical applications.

5. Specialty Chemicals Segment – Driven by World-Class Innovation

Distinguished by cutting-edge technology, innovation, and deep market insight, this segment delivers high value creation and profitability, fueling long-term growth and enhancing GC’s global competitiveness. Operated under allnex, a world leader in environmentally friendly coating resins, these products serve a wide range of industries, including automotive, packaging, electronics, and aerospace.

allnex plays a vital role in propelling GC toward high-value, low-carbon specialty chemical businesses.

By integrating all five business segments, GC effectively manages the entire value chain — minimizing exposure to raw material price fluctuations, enhancing competitiveness, and creating value across every stage of the process.

This strong foundation is what makes GC “Sustainably Different” — and this is why GC continues to inspire enduring confidence in its future.