This is Dennis from Guangxi Dikai Sci&Tech Co., Ltd. Dikai company arouses its all efforts and strives for progress for 32 years to be the earliest founding and most well-known professional lightning protection company with the most complete lightning protection products and highest lightning protection qualification. We are professional lightning protection products manufacturer, which in lines of  direct lightning protection products, power line surge protection products, signal line surge protection products for more than 30 years. Most of the products are certified by CE, CQC, CRCC, TLC, etc. It is the one top purchasing and service provider of surge & lightning protection products.Know more details please visit: www.dikai.com.cnWechat/Phone: +8618877541979Email: surge@dikai.com.cn