ABOUT DONGYU
Company History
Key milestones in Dongyu's development from fiberglass roving production to an integrated composite-material product range.1996–2026
Three Decades of Development
Milestones reproduced from the Dongyu company-history archive.
Roving furnace was put into operation.
Roving weaving project was put into operation.
Invested RMB 8 million to expand production scale and increase capacity.
Purchased new property for a new building.
Established Changshu Dongyu Insulated Compound Materials Co., Ltd.
Chopped strand mat machine was put into operation.
Invested more than RMB 30 million in new equipment to increase production capacity.
Dongyu was listed as one of the major enterprises by the Changshu Government.
Built a new office building and expanded production scale.
Invested in a new building for research and technology development.
Established the subsidiary Changshu Sany Textile Co., Ltd.
Started the carbon-fiber project.
Established Changshu Dongha International.
Established the Dongyu FRP factory.
Established a polyester-resin impregnated fiberglass web banding-tape factory.
Established a fiberglass-yarn production line.
Established combo-mat and RTM-mat production lines.
A new production base was put into service with upgraded fiberglass production lines.
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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.