Oringinal Steel purlins, studs, and tracks amatenga gawo lofunikira pakumanga kwamitundu yosiyanasiyana, kaya ndi nyumba, mlatho, kapena mitundu ina yamitundu. Zida zachitsulozi zimagwiritsidwa ntchito kuti zikhale zamphamvu, zolimba, komanso zotsika mtengo. Kupanga kwa zigawozi ...
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