... , M16*2000mm, M16*3000mm... M18*1800mm, M18*2000mm...We can supply you three shapes as: 1) Ground rod can be made ... size and copper thickness can be supplied on requestYonggu Group Corporation Co., Ltd. is located in Wenzhou City, near the south of ... in 1985, which is the first national non-regional group corporation with scientific research, development, manufacture, trade and after-sales service ...