9190 is a kind of efficiency of extracted from plant deodorant, product non-toxic, no stimulation, and all kinds of odor molecules rapidly after decomposition products are harmless substance, such as water, oxygen, nitrogen, etc., is dedicated to solve harmful, odorous gases generated in pulp and paper research and development design, can be used in the exhaust pipe, spray factory, sizing agent, treatment of circulating water and sewage smell smell smell. Low use cost, no secondary pollution, the effect is significant and lasting.