This is Eva from Molong Carbon, which is ne of the largest and professional manufacturer for RP/HP/UHP graphite electrode in North China, Diameter from 100mm to 700mm. My Cellphone/Wechat/Whatsapp:+86 one eight one three one zero zero eight five four zero, Email:molongcarboneva@163.com Looking forward to hearing from you. Thanks and Regards, Eva Show More