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1. pwodwi kout entwodiksyon Karakteristik prensipal yo nan pwodwi yo se fòs ki pi wo li yo (apeprè 2 fwa nan asye pur), ranplase pwodwi yo anvan yo asye pur, pi bon kowozyon nan lavni pèfòmans rezistans, limyè pwa (prèske mwatye nan asye pur), diminye operasyon an. ..
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