Narkewar da ba a saka ba an kera ta musamman don ISO 4 da ɗakuna masu tsafta mafi girma, kuma sun dace da tsauraran wurare kamar ɗakuna masu tsabta, masana'antar kayan aikin likita ko masana'antar fasahar kere kere.Na musamman na surface texture yana da mafi alhẽri absorbability, kuma shi ne sosai dace da masana'antu bukatar key ayyuka kamar kantin magani, high fasaha, Biotechnology da kuma likita kayan aiki.