Note that the estimate for the current annual demand is quite conservative since the catalyst replacement rate on oil- and gas-fired combustion units is likely to be less frequent than one-twelfth of the catalyst per year.
The estimate for new catalyst is quite generous and probably much less will be required.
mnli hypothesis: The estimate for new catalyst is quite generous and probably much less will be required. premise: Note that the estimate for the current annual demand is quite conservative since the catalyst replacement rate on oil- and gas-fired combustion units is likely to be less frequent than one-twelfth of the catalyst per year.