In last two decades, the business of refining catalyst has grown from regional to global level. Refinery product values are dependent on process catalysts of refined products, petrochemical products and chemicals alongwith other refinery operations. One of the major concerns in the refinery is to reduce the sulphur content to the required limit. Hydro-processing catalysts (HPC) are primarily consumed in the hydro-processing operation of crude oil fractions. Such crude oil fractions include kerosene, naphtha and diesel. As a common practice, hydro-processing of crude oil fractionsis carried out at an elevated temperature and pressure.Hydro-processing is required to remove pollutants such as sulphur, heavy metals and nitrogen from fuel oils. These catalysts also help in the catalytic hydrocracking process to crack larger hydrocarbon molecules into smaller sizes,to be used as fuel oils. Thus, hydro-processing catalysts enable conversion of heavy feedstock into lighter products for efficient processing. Hydro-processing catalysts market is the fastest growing refinery catalysts market segment in the world. In addition, hydro-processing catalysts supplement the process control and operational efficiency improvement activities. Therefore, it is expected that the hydro-processing catalyst market will dominate the global refinery catalyst market by 2020.