D&H Sécheron Electrodes Pvt. Ltd manufactures Autotherme Mn - Mo. D&H Sécheron Electrodes Pvt. Ltd is an ISO 9001:2000 certified company. The Autotherme Mn - Mo is a copper coated solid wire available in bright finish. It is suitable for welding high strength fine-grained structural steels containing - 0.5%Mo.