In November 1938, the Owens-Illinois Glass Company and the Corning Glass Company of the United States jointly established a joint venture, the Owens-Corning Glass Fiber Company, marking the birth of the fiberglass industry.
In 1938, the patent for epoxy resin was published, laying a material foundation for the development of fiberglass electrical laminate materials.
In 1939, alkali-free glass fiber came out.
In 1942, unsaturated After polyester was put on the market, it was later discovered that the combination of glass and saturated ester could greatly improve the mechanical strength of polyester resin. This was the beginning of the fiberglass reinforced plastic (FRP) industry. Since then, the FRP industry has always been the main driving force for the development of the fiber industry.