After years of exploration with high quality catalyst manufacturers at home and abroad, we have developed a set of catalyst impregnation process for local production of catalyst products, including hydrogenation, reforming, dehydrogenation, selective hydrogenation catalysts and other catalysts impregnated with active metal on catalyst support. The practice shows that some catalyst products produced locally, including hydrogenation protection agent and selective hydrogenation agent, have good performance and long-term application basis.