1.Monga chitsulo pamwamba pa dzimbiri inhibitor, ili ndi zotsatira zapadera. Akagwiritsidwa ntchito pochiza zitsulo monga golide, siliva ndi mkuwa, ndi zina zotero, kukana kwa dzimbiri, kukana kwa okosijeni ndi kumamatira ndi ma polima monga utomoni amatha kukulitsidwa.
2.M'makampani opangira mphira, nthawi zambiri amagwiritsidwa ntchito pochiza ma inorganic fillers monga silika, carbon black, glass fiber ndi mica, zomwe zimatha kukonza bwino makina komanso kuvala kukana kwa rabara.
3.M'makampani opanga nsalu, amatha kugwiritsidwa ntchito pothana ndi shrinkage kumaliza kwa nsalu ndi zida zopangira zosamalira tsitsi.
