Matebulo a ZHHIMG ndi malo ogwirira ntchito osagwedezeka, omwe amapezeka ndi tebulo lolimba lamwala kapena pamwamba patebulo.Kugwedezeka kosokoneza kochokera ku chilengedwe kumatchingidwa patebulo ndi ma membrane air spring insulators amphamvu kwambiri pomwe mawotchi amawu amasunga thabuleti yokhazikika.(± 1/100 mm kapena ± 1/10 mm).Kuphatikiza apo, palinso gawo lokonzera zowongolera mpweya.