Pneumatic hydraulic jack cov khoom yog siv cov roj compressed raws li lub zog, kua pressurization thiab telescopic hydraulic lub tog raj kheej ntawm ib hom tshiab ntawm cov cuab yeej nqa, nws muaj cov qauv zoo heev, ntim me me, lub teeb yuag, yooj yim rau kev khiav lag luam, lub sij hawm thiab lub zog, zoo lifting tonnage , liquidity yog dav siv nyob rau hauv lifting, tshwj xeeb tshaj yog haum rau tsheb, tsheb laij teb thiab lwm yam kev lag luam kho tsheb thauj mus los.