Chinthu chachikulu cha mankhwalawa ndi zinthu zatsopano za PVC za utomoni, calcium carbonate yachilengedwe, pulasitiki yopanda phthalic, ndipo pamwamba pa sitepeyi ndi wosanjikiza wosasunthika wazinthu zoyera za PVC (kuonjezera moyo wautumiki wa sitepe).Masitepe a masitepe ali ndi anti-slip, zotsatira zomveka bwino, ndipo ali ndi mitundu yosiyanasiyana yosankha, yomwe ingakwaniritse zosowa za kukula kwa masitepe osiyanasiyana m'nyumba zamakono komanso kupanga mitundu yonse.