Metal Gems supplies Zonal Lighting system protects from Thunders. Metal Gems is a manufacturer and exporter of Copper and Copper Alloy Tubes, Fin tubes, Lightning Protection System, Cable Terminal & Accessories and Stainless Steel products. Metal Gems is an ISO 9001: 2000 certified company. This Zonal Lighting system is used to protect the house from the thunderous and disastrous effects of lightning. Lighting protection system provides a means for controlling it and preventing damage by providing a low resistance path for the discharge of lightning energy.