Purposes:

It is mainly used in industries of welding, incising, polishing, spray finishing, casting, chemical, timber processing, tobacco, pottery and paper making etc., on occasions of large and medium-sized welding, polishing or processing. Welding fume, soot, dust and harmful gas can be taken away right from the source, so that it will not spread to the environment. Therefore, air pollution is avoided, and the health of the workers is protected.