HAIDER GLOBAL ENTERPRISES is representing Shandong Mingdao Heavy Industry Machinery Co. Ltd. which is mainly engaged in the design , manufacture , installation and maintenance of Single girder overhead cranes (LD Models) , Double Girder Overhead Cranes (LH , QD etc ) , Gantry Cranes (MH , MDG....) , Jib Cranes (BZ,QZ,MZ etc) , Frequency Invert Cranes , Explosion - proof series Cranes (LB,QB etc) , Cranes with grab bucket , Low Headroom Hoist , Electric Winches , Construction Cranes , Clean Room Cranes and CD1 MD1 HC Electric Rope Hoist , Hand Chain Hoist etc.