By means of advanced technology of foreign waste gas treatment devices and combined with our own practical experiences of manufacture of glass fiber reinforced plastic acid mist purifying tower in dozens of years, we have researched and developed a new generation of the waste gas purifying device. After test of analogue producton and supervision and measurement of environmental protection department, the purifying rate of hydrochloride(HCI) gas reaches over 95%; that of sulfur acid (H2SO4) mist about 90% and that of alkaline(NaOH) mist over 93%. Therefore it is the newest and the most ideal purifying device in chemical, machinery, electronic, metallurgy and pharmaceutical industries.