bụ a maara nke ọma otu ụlọ ọrụ na Shandong Province, tumadi aku na mmepụta na R & D nke buru ibu ma na-ajụ-sized ụlọ elu cranes, ihe Ịgwakọta osisi, mpụga mgbidi ewu cranes , ewu nchekwa ihe na soda ash mmepụta e.
