Dongyu expanded its fiberglass manufacturing operations.
About
COMPANY PROFILE
A focused composite-materials partner
From upstream glass fiber
to application-ready materials
Founded in 1996, Changshu Dongyu Insulated Compound Materials Co., Ltd. (DYF) is a high-tech enterprise specializing in R&D, Production and Sales of Fiberglass Composite Materials.
It has obtained ISO 9001 certification, accredited by UKAS and issued by DNV.
Strictly following the development strategy of high quality, service internationalization and technological innovation, the company has established long-term and stable cooperation relations with customers from more than 80 countries and regions around the world.
- Quality-led manufacturing
- International service capability
- Continuous process innovation
- Long-term customer cooperation
- Founded in Changshu
- 1996
- Countries and regions served
- 80+
- Monthly CSM capacity from 2026
- 1,500 t
- Quality credentials
- ISO / DNV
WHO WE ARE
Three Decades of Development
OUR PRINCIPLES
The Values Behind Dongyu
QUALITY
CORE CONCEPT
Better Quality, Better Cooperation.
HUMANITIES
COMPANY CULTURE
Honesty, Learning, Open-minded, Sharing.
SERVICE
SERVICE GUIDELINES
Customer satisfaction is our eternal pursuit.
STRATEGY
KEY STRATEGY
Be the right one.Client Testimonials
A Professional & Reliable
Manufacturing Partner
With modern workshops and mature systems, we offer stable production for global clients. Strict QC & teamwork build reliable long-term partnerships.
- New line fully operational
- 2026
- Monthly capacity
- 1,500t
- Real-time process monitoring
- 24/7
OUR SUPPLIERS
Qualified glass-fiber inputs
OUR CERTIFICATIONS
Certified systems. Verified products.
ISO 9001 Quality Management System Certificate
Quality-management-system certificate for fiberglass and FRP product production and sales.
DNV Type Approval Certificate
Type-approval document for E-glass chopped strand mat.
CSZJ Product Quality Inspection Report
Product inspection report published in the Dongyu quality archive.
GET YOUR MATERIAL QUOTE
Need Suitable Fiberglass Materials?
Simply tell us your product specifications, usage and order volume. Our international sales experts will offer actionable solutions for you.Let’s Discuss Your Project
OUR VALUE
Professional Manufacturer of
Fiberglass & Composite Materials
DYF’s major products are: fiberglass roving, fiberglass yarn, chopped strand mat, combo mat, multiaxial fabric, FRP products and fiberglass fire blanket.
Quality Assurance
We deliver stable and dependable quality for all fiberglass and composite material series products.
Custom Solutions
We provide tailored manufacturing services to satisfy various complex and individualized project demands.
Technical Support
We supply comprehensive professional technical guidance together with timely and efficient after-sales customer support.
