Product authentication: 1. The handle adopts good quality rubber, good quality toughend glass lampshade, with guard. 2. The lamp body adopts seal struture, has high waterproof perfoamance and anticorrosive performace, fit for illuminating temporaay work place used for chevking and repairing ship or loading or uploading goods. 3. Conform to GRADE ENTRY NORMS FOR STEEL SHIPS, and National standard GB3836 - 2000, GB12045, En50014, En50018, En60079.