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Life Cycle Assessment

Eco-design

GC has established eco-design guidelines and evaluation criteria by applying Eco-Design Criteria based on the ISO 14062 standard to support the consideration of new product design and product characteristic assessment throughout the product lifecycle as follows:

Product Life Cycle Eco Design Criteria
Raw Materials
  • Compostable
  • Degradable
  • Extended Life Product
  • Recovered Energy
  • Recyclable
  • Recycle Content
  • Reduced Energy and Water Consumption
  • Reduced Resource Use
  • Reusable
  • Refillable
  • Waste Reduction
  • Renewable Material
  • Renewable Energy
  • GHG emission
Transportation
  • Reduced Energy Consumption
  • GHG emission
Production
  • Recovered Energy
  • Reduced Resource Use
  • Waste Reduction
  • Renewable Energy
  • GHG emission
Use Phase operation and servicing maintenance
  • Extended Life Product
  • Recyclable
  • Reusable
  • Refillable
  • Waste Reduction
End of Life Management
  • Compostable
  • Degradable
  • Recyclable
  • Waste Reduction

GC focuses on developing environmentally friendly products to meet customer needs while creating added value for products through reducing raw material usage, reducing energy consumption, using biodegradable materials, using renewable energy, and reducing greenhouse gas emissions.

Eco

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Life Cycle Assessment (LCA)

GC has implemented the Life Cycle Assessment (LCA) in accordance with ISO 14040 and ISO 14044 standards. The assessment methods are categorized into three approaches:

  1. Full Life Cycle Assessment (Full LCA): This comprehensive method involves four key stages including Goal and Scope Definition, Inventory Analysis, Impact Assessment, and Life Cycle Interpretation.
  2. Simplified or Screening Life Cycle Assessment (Simplified LCA/Screening LCA): This method uses basic data and focuses on key environmental impact indicators, such as greenhouse gas emissions, allowing for quicker assessments and lower resource requirements.
  3. Alternative Environmental Impact Assessment Methods: This includes Material Flow Accounting (MFA) to analyze the flow of materials related to the product.
Life Cycle Assessment: LCA 2022 2023 2024 2025
Full LCA (%) 4 4 4 5
Simplified LCA/Screening LCA (%) 54 63 63 67
Material flow accounting (%) 42 33 33 28

GC’s products received environmental certifications, including Carbon Footprint of Product ,Carbon Footprint Reduction, and Carbon Footprint of Circular Economy Product from the Thailand Greenhouse Gas Management Organization. The company also assesses direct and indirect water consumption and water efficiency in production processes, or water footprint, according to ISO 14046 while performing the Life Cycle Assessment according to ISO 14040 and ISO 14044.

In 2025, GC applied for carbon footprint certification for bio-based products manufactured by converting used cooking oil (UCO) into high-value bio-chemicals and bio-polymers, including Bio-Ethylene, Bio-Propylene, and Bio-Butadiene.