Self-liftingtower crane.

Profile:This series of product is a new generation tower crane designed according
to the newest country standard and the requirment of constuction market.The mechanism
of lifting,turning and extent changing adopt advanced techniques of verioustower crane in and out of china.the whole machine is well designed with reasonable
stucture,fine shape,excellent performance,high safty,the tower crane equipswith safty devices such as lifting torquelimiter,height limiter,extent changinglimiter and turining limiter.