Amakhoyili ahlanganiswe ngombala(ikhoyili ye-ppgi/ppgl) asekelwe eshidini likathayela elidiphu elishisayo, ishidi elinothayela lokucwilisa elishisayo, ishidi elenziwe ngogesi kagesi, njll. Ngemva kokwelashwa kwangaphambili (ukususwa kwamakhemikhali nokwelashwa kokuguqulwa kwamakhemikhali), ungqimba olulodwa noma ezimbalwa ze-organic. ama-coatings asetshenziswa ngaphezulu, bese kuthi u-A p...
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