Our story since 1999
From RTRC conduit to integrated composite engineering.
Thai Composites has evolved from a dedicated conduit manufacturer into an integrated FRP production, testing and service organization supporting electrical, water and industrial applications.
Thai Composites Company Limited
Manufacturing capability shaped by quality systems, product development and practical project experience.
Established in 1999, the company began with Reinforced Thermosetting Resin Conduit and developed its production scope under the GRE brand. Over time, the business expanded into a broader range of epoxy fiberglass and FRP products.
- Composite manufacturing based in Chonburi Province.
- Quality-system development across multiple ISO generations.
- Products for electrical, water, wastewater and industrial systems.
- Factory, inspection and professional after-sales support.
Manufacturing Focus
Production systems developed around composite materials, repeatable processes and industrial application requirements.
Quality Development
Continuous upgrades in quality management, certification and product control from 2001 onward.
Product Expansion
Growth from RTRC conduit into piping, water-related systems, structural products and custom composite solutions.
Responsible Growth
A forward-looking direction focused on sustainability, environmental responsibility and green industry development.
Corporate milestones
A clearer story of growth—from one product to a broader composite platform.
Company establishment
The company was established to manufacture Reinforced Thermosetting Resin Conduit as a domestic alternative to imported conduit products. The operation focused on composite-material manufacturing capability and product reliability.
Full-scale production
The company moved into full-scale production of electrical conduit with a broader product range. Sales and marketing were supported through an affiliated business structure while Thai Composites concentrated on manufacturing.
ISO 9001:2000 & product expansion
Certification under ISO 9001:2000 reinforced the company's commitment to internationally aligned quality practices. The product portfolio expanded into FRP piping systems and water-related industrial applications.
ISO 9001:2008 upgrade
The management system was upgraded to ISO 9001:2008, supporting improved efficiency, stronger process control and closer alignment with evolving industry expectations.
Industrial standard compliance
Product and manufacturing processes were further aligned with the updated Thai Industrial Standard TIS 2518-2557, reinforcing reliability and compliance for infrastructure and industrial use.
ISO 9001:2015 certification
The company upgraded to ISO 9001:2015, reinforcing stronger attention to risk-based thinking, operational improvement and long-term quality performance.
Green Industry development
Thai Composites continues to move toward more sustainable manufacturing, emphasizing responsible processes and a long-term green-industry direction. Connects industrial performance with environmental responsibility and future-ready operations.
Thai Composites Company Limited was established to manufacture Reinforced Thermosetting Resin Conduit (RTRC) as a domestic alternative to imported conduit products from Canada under the GRE® trademark.
The company was founded with a clear vision to strengthen local manufacturing capability in high-performance composite materials.
The company achieved full-scale production of electrical conduit with a complete product range.
At the same time, sales and marketing operations were supported by the affiliated company, GRE Composites Co., Ltd.
Thai Composites quickly became recognized as one of the leading manufacturers of epoxy fiberglass products in Thailand, particularly in conduit systems.
Thai Composites was certified under ISO 9001:2000, demonstrating its commitment to international quality standards.
The company expanded its product portfolio to include FRP piping systems for Industrial applications, Water supply systems, Wastewater treatment systems
All products were designed and manufactured in compliance with Thai Industrial Standards (TIS 1483, 1484, 1485).
The quality management system was upgraded to ISO 9001:2008, ensuring improved efficiency, better process control, and alignment with evolving industry standards.
Products and manufacturing processes were further aligned with updated Thai Industrial Standards, reinforcing product reliability and compliance for infrastructure and industrial applications.
The company successfully upgraded to ISO 9001:2015, demonstrating a strong focus on risk-based thinking, continuous improvement, and long-term operational excellence.
Thai Composites continues to move forward toward sustainable manufacturing, emphasizing environmentally responsible processes and green industry development.
Facility & workforce
Capacity behind the milestones.
The company-history page concludes with the operational scale and team structure supporting manufacturing, inspection and project delivery.
Space for production,
product staging and project preparation.