1, ISO9001,IEC,KEMA etc. 2. OEM/ODM 3. Main material: porcelain Polymer type lightning arrester1. Polymer type 2. Main material: porcelain3. OEM/ODM4. ISO9001,IEC,KEMA etc. standard 5. Safe usage, Favorable price6. Rated Voltage: 21 kv we sincerely hope our hardworking, our products can service more and more clients from all over the world, so, if you are interested in our products, please don't ...