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Ihe ndị ọzọ na-akpata
Anyị na-enyekwa ihe ndị na-eme ka serial na otu ndị na-eme ihe na-eme ihe na petrochemical na gas chemical nhazi dị ka ihe na-emepụta ihe na adsorbents na synthetic amonia unit, hydrogen na-emepụta unit, acetylene hydrogenation catalyst na nhazi PE, propane dehydrogenation catalyst, na ihe ndị ọzọ.
