China is rich in extra fine sand, such as river sand in the Changjiang River, Yellow River and Zhujiang River, blow sand in the area of northeast China and Xinjiang.

• 我国有着丰富的特细砂资源,如长江、黄河、珠江等流域的河砂,西北和新疆等地的风积砂几乎遍布全国各地。