how to calculate operating profit margin Marvin Loh, senior fixed income strategist at BNY Mellon, The European central bank's interest rate and previous decision to taper its bond purchases have been stable: capfafenbach The rubber hose in the engine compartment will be used for a long time and it will be a problem for older vehicles. Once aging, gasoline can leak into the engine compartment. The air conditioning system will allow the smell of petrol to enter the car. Therefore, once the rubber tube is old, need to change promptly! Central bankers must learn to speak in colloquial language Currently, varied businesses are developing and booming on their own track. The idea that the priority of making profit precedes everything in businesses, has incited the reproach and criticism from the societies. As for me, I disagreed with this point of view as well, since the obsession on profits does damage to other things that a company request.