We could supply composite hollow insulator for SF6 Circuit Breaker from 110KV to 1100KV as per standard ANSI, IEC, BS, AS, DIN or according to the customer's requirement. 
We manufacture high voltage insulator 10kv-500kv series composite insulators, also known as polymer insulators or silicone rubber insulators, which include suspension long rod silicone rubber insulators, pin type composite insulators, station post polymer insulators, cross arm silicone rubber insulators, electrified railway polymer insulators, Polymer dise insulator, polymer lighting arrester. 
As the replacement of porcelain insulators, silicone rubber composite insulators have many advantages: 

1. Excellent anti-pollution performance, suitable for high polluted area
2. Free of cleaning, economical maintenance and suitable for difficult maintenance area
3. No need of zero value check
4. Light weight, easy and economical to transportation and installation 
5. Not brittle, and reduce the purchasing quantities for spare parts