(1)Adopt USA  unit parts and  pneumo hydraulic technology  , no need direct power drive ,only connect air compressor,5-8bar pressure.The maxi lifting capacity 4000kg,lifting height 1800mm .

(2)safety setting: adopt USA the same design,rely on the about 155liter hydraulic oil in the cylinder.even if air leakage and oil leakage,automatic control the flow hydraulic oil, no less than 50s drop speed. the staff have enough time to leave work area and the vehicle above the equipment may  slowly descend to floor at the normal speed.

(3)Adopt pneumatic power,without electronic accessory,  not fear of inundate,can use it in outdoors for long-term,low failure rate and maintain rate,when power off,the vehicle won't decline.

(4)Adopt single post lift special drive switch control valve original import in USA,advantage: won't happen accident  if the staff forget close and open valve.this valve can control its lifting height according to request and duplicablity add user safety.