... 10¹º10 DC Beakdown Voltage(10min) KV ≥5011 Lightning Impulse Withstand Voltage(10kv,10mm) times ≥512 Heat ... C ≥13513 Glass Fiber Content % 70-8014 ECR Rod Stress Corrosion Test h ≥96 ----------------------------------------------------------------------------------------------------Why Tongyi Power ... over 15 years' experience in production of fiberglass rod, epoxy resin, pultrusion. d. KEMA, WHRVI test ...