... , it made of the C or E glass fiber yarn (main ingredient is a silicate, good chemical stability ... , high tensility, light weight.3.Our fiberglass yarn is supplied by Jushi Group which is the ... largest producer of fiberglass yarn in the world like Saint Gobain, it own ... 20% extra strength and beauty surface than normal fiberglass yarn!4.Strength retention rate > 90%, elongation <1%, ...