glass fiber powder is made of ball mill, hammer mill grinding equipment such as glass fiber strand products after grinding, the average length of fiber is between 0.1 ~ 0.5 mm.glass fiber powder is the difference between the glass beads into granular, glass powder size is only 50 ~ 100 microns.glass powder are generally only used as a filler, and glass fiber powder can be used as reinforced material.glass fiber powder is the difference between the fiber and chopped strand grinding fiber in the fiber length is much shorter than chopped strand, and fiber monofilament, and chopped strand of fiber bundle, each chopped strand consisting of more than 200 root fiber.