Various hazardous substances which occur in industrial sites are a social issue because they pollute the environment and have great impact on operators’ health. AIRTECH 21 will contribute to creating a safe and clean operational environment by producing the best precipitator with a philosophy in which a clean and safe operational environment without harmful substances is the foundation for the health of individuals and the social peace. Based on the establishment philosophy, AIRTECH 21 has tried to constantly research to produce the excellent precipitator and move customers with differentiated service, and as a result, we have become the competitive company among various companies already occupying the market. Now, AIRTECH 21 develops technologies such as high-efficient filter, highly advanced precipitation method, etc. and exports various products to different countries for the first time in Korea. Also, it retains patents, utility models, registration of design, CE certificates, ISO certificates, etc. AIRTECH 21 will do our best to be the company which is reliable and creates new values through steady development of technologies and consistent management innovation.