Heater Plugs/ Resistor Blocks We are a well established manufacturer of high standard heater plugs and resistor blocks, that are encountering wide demand in the global markets. The main function of heater plug is "Heating the combustion chambers of diesel engines in cold conditions". In comparison to petrol engines, diesel engines do not use spark plugs to induce combustion. But instead of it, they depend solely on compression. The piston rises, compressing the air in the cylinder and thus causes the air's temperature to rise. By the time the cylinder reaches the top of its travel path, the t