Henan Yongchang crane used construction machinery company operating the brand are: 1. Domestic; Xugong, Yangtze used 250 tons crane price, Pu Yuan, 25 tons; 30 tons 50 tons 100 tons 2. Imported cranes brand Liebherr 250 Held Maag Which is good-ton crane, 200 t 300 t 450 t 500 t 3. Kato KATO, the tonnage model; NK160, NK250E, NK350E, NK400E, NK500E 250-ton crane company, NK800E, NK1000E 250-ton crane, NK1200E NK1600E crane conventional wisdom: obey command command, control crane, complete loading and unloading of goods by lifting, rigging. After the crane operator must obtain the traffic administration department issued a driver's license, the company issued an internal Zhunjia Zheng and Tianjin Quality and Technical Supervision issued by the special equipment operating permit, the Ministry of Communications issued qualification certificates, technical grade primary certificate before posts.