| http://www.w3.org/ns/prov#value | - In this reproduction treatment, a gas heated by using a heating means such as exhaust gas, catalyst disposed if necessary, heater or the like is introduced into the insides of the cells 21 in the filter F for the purification of the exhaust gas to heat the filter F for the purification of the exhaust gas, whereby the particulates deposited on the cell walls 23 are burnt and removed.
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