Profile: GDM Heat Transfer Ltd. is a manufacturer of aluminum heat exchangers. We are an ISO 9001:2000 certified company. Oil cooler is used to remove heat from hydraulic and transmission system. Oil coolers are an integral part of recycling the oil within a system, to continuously remove unwanted heat. They are used in power generation, industrial machinery, and in offshore applications. Engine radiators are designed in dispensing the heat load generated by water traveling through an engine system. They are used in automotive, railway locomotives, motorcycles, and industrial plants.