... (new material), save energy, light weight, high strength. Features: glassfiber crossarmThe glassfiber coposite materials ... 6)This product has save energy,light weight,high strength,and good quality on impact,dielectric, ... satisfied the following technique conditions.JB/T9676-1999 high-voltage lien porcelain crossarm insulator,GB13398insulated pole used ... and Hebei and so on lines glass fiber crossarm