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Polypropylene (ma pp) odulidwa
Firbern fiber imatha kusintha kwambiri momwe ukugwirira ntchito pakati pa fiber ndi matope a simenti. Izi zimalepheretsa kusokonekera kwa simenti ndi konkriti, kumalepheretsa kuchitika ndi chitukuko cha ming'alu ya matope ndi konkriti, kotero kuonetsetsa kuti ma yunifolomu yunifolomu, amalepheretsa mapangidwe okhalamo.
