Since late August, glass fiber, the main raw material for glass fiber reinforced plastic manufacturing, has experienced two waves of sharp price increases. It is reported that glass fiber roving, chopped strand mat, and various glass fiber fabrics have increased by about 2000/ton, and the price has been low since 3600/ton. It has already risen to about 5500/ton, and some downstream manufacturers report that they cannot order the goods. The glass fiber manufacturers only quote but not supply, and the price is 6500-7500 yuan/ton. Downstream manufacturers line up to place orders, and the price will not be locked, depending on market conditions at the time of delivery.