... 12T 1. CE Certificate,Gost,ISO 2. Top 10 tower crane manufacturer 3.export more than 30 countries Technical Performance ( ... the center of base and the building4.5Overall height (independent tower head section height)61.4From end of hoisting boom to ... .7,61.7,56.7,52.7)From end of balance beam to slewing center19.2Counterweightt27.3(25,23,19.6 ...