Zvigadzirwa zviri munhevedzano iyi zvakapetwa kaviri-layer vacuum poda yekuvharisa midziyo, yakakamurwa kuita mafomu maviri, yakatwasuka uye yakachinjika, uye zvimiro zvechigadzirwa zvinogona kugadzirwa uye kupihwa kubva pa1 cubic mita kusvika ku200 cubic metres. Iwo anonyanya kushandiswa kuchengetedza mvura okisijeni, nitrogen, argon, carbon dioxide uye gasi rechisikigo.