The quayside container cranes developed and manufactured by DHHI follow the Design Rules for Crane and international design and manufacture standards and specifications FEM, DIN, IEC, AWS, etc. The quayside container crane mainly consists of the electrical control system, steel structure, machine house, main hoisting mechanism, traversing mechanism, travelling mechanism, boom luffing mechanism, trolley assembly, maintenance hoist, inclination mechanism anti-snagging protection device as well as other necessary safety and auxiliary devices. The main hoisting mechanism, traversing mechanism, boom luffing mechanism and travelling mechanism are of advanced AC VVVF technology and provided with advanced single lift or twin lift spreaders of various specifications and mechanical or electronic anti-swaying functions. At present, the products are available in 30t, 35t, 40t, 45t, 50t, 61t, 65t and 80t, etc.