AI compute infrastructure demand has triggered a new round of optical‑fiber price increases, lifting prices for high‑purity quartz sand used in fiber production. High‑end 6N‑grade and above quartz sand is particularly tight, with mainstream market quotes for fiber‑use high‑purity sand at 48,000–55,000 yuan/ton. High‑purity quartz sand is used across preform manufacture and fiber drawing and in fiber‑grade quartz tubes and furnace components. The demand boost mainly benefits firms with 6N‑level p

AI compute infrastructure demand has triggered a new round of optical‑fiber price increases, lifting prices for high‑purity quartz sand used in fiber production. High‑end 6N‑grade and above quartz sand is particularly tight, with mainstream market quotes for fiber‑use high‑purity sand at 48,000–55,000 yuan/ton. High‑purity quartz sand is used across preform manufacture and fiber drawing and in fiber‑grade quartz tubes and furnace components. The demand boost mainly benefits firms with 6N‑level production capability; downstream processing adheres to market pricing and remains sensitive to cost, supply and broader market conditions. Domestic self‑sufficiency for 6N+ material is low, keeping near‑term supply tight.