<prompt> Translate the following text to EnglishKwa hivyo, haipaswi kushangaza kwamba mahitaji ya kujaza kwa kwanza na catalyst ya kubadilisha mara kwa mara inapaswa kuwa na sehemu kubwa ya msingi wa usambazaji.  <response>: Thus, it should not be surprising that demand for initial fill and periodic replacement catalyst should account for a significant portion of the supply basis. 