Can you please check it? Thank you.
Fuel oil – medium and heavy, (it) is composed of all side-products made during the oil processing that do not fall under the rest of the oil derivatives. The most important characteristic/property of this oil is viscosity and the amount of total sulphur. The lower viscosity is important because of the easier dispersion of fuel oil in incinerators' s burners, and of sulphur because of the corrosion.