Cov iav helical tau teeb tsa rau Helical iavboxes hauv Lifting machine yog qhov tseem ceeb tivthaiv ua kom ruaj khov thiab txuag hluav taws xob du thiab txuag tau. Nws cov kev pab helical txo cov suab nrov thiab kev co, txhim kho kev ua tau zoo tag nrho. Lub iav teev cov qauv kev ua haujlwm ua lag luam engineering Haum rau ntau yam kev siv daim ntaub ntawv, nws lav kev cia siab thiab kav ntev, ua rau nws tsis tseem ceeb ntawm kev nqa khoom niaj hnub no.
Kaum kaum tus lag luam hauv Suav teb, Nruab nrog 1200 tus neeg ua haujlwm, tau txais tag nrho 31 lub patents thiab 9 patents .ade .ad cov khoom siv tsim khoom, cov khoom siv kho cua sov.