Jiangsu Changhai Composite Materials Co., Ltd engages in the research and development, production, and sale of glass fiber products and composite materials. It offers glass fiber yarns, which include felt yarn, transparent board yarn, continuous fiberglass pipe, SMC sheet yarn, textile direct yarn, chopped fiber, direct yarn, jet yarn, roof yarn, ply yarn, ply-type pultruded yarn, glass fiber chopped strand mat yarn, and glass fiber wet chopped strand products. The company also provides fiberglass products, such as glass chopped strand mats, glass fiber wet mats, fiberglass fabric, fiberglass coated mats, fiberglass partitions, fiberglass continuous mats, and fiberglass mesh; thermoplastic glass fiber and its products, including thermoplastic fiberglass, continuous fiber reinforced thermoplastic prepreg tapes, reinforced polypropylene composite boards, thermoplastic fiberglass, thermoplastic honeycomb composite panels, and thermoplastic foam insulation composite boards; and glass fiber for wind power and photovoltaic. In addition, it is involved in manufacturing unsaturated polyester resin; sale of methyl ethyl ketone peroxide, FRP products, chemical raw materials, and glass fiber raw materials; and testing, technical training, and consulting operations for FRP and its raw and auxiliary materials.