Holtop imapereka zinthu zatsopano zopangira mpweya ku nyumba zina kuti zipititse patsogolo mpweya wamkati, monga ma ventilators obwezeretsa kutentha, ma ventilator obwezeretsa mphamvu, makina oyeretsera mpweya, makina ophera tizilombo.Nawa zochitika zina za polojekiti.Ngati muli ndi projekiti ina iliyonse, landirani ku...
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