•HL is belond to a borosilicate glass, none-alkali and low- calcium design, has low a lower dielectric constant and the dielectric loss •Unique patented technology of melt and molding, can Produce ultra-spun D500 of fiberdiameter is 4.5um •The tensile strength is about 30% higher than E-glass, may significantly increase production efficiency in the weaving process •The density of the glass is 2.3g/cm3, Lower than similar products 5%, lighter substrate materials is based on HL •The bubble content is less than 0.1 a /g, The product quality is more excellent and more stable performance •Glass composition design and surface treatment processes excellent，Products better water resistance, It can effectively prevent products become moldy. Air Jordan News