Yantai DNG Heavy Industry Co., Ltd. (Abreviated dị ka DNG) dị na Yantai City, nke a maara dị ka mmepụta isi nke China Hydraulic breakers.DNG nwere ike teknụzụ siri ike na ahụmịhe mmepụta bara ụba, nke ọkachamara n'ịmepụta hama hydraulic dị iche iche na akụkụ ahụ mapụtara, dị ka chisels, pistons, isi na azụ, chisel ohia, ohia n'ihu, pin mkpara, bolts, na ngwaahịa ndị ọzọ na-akwado.DNG nwere akụkọ ihe mere eme karịa afọ 10, na ụlọ ọrụ mmepụta ihe gafere ISO9001, ISO14001 asambodo na EU CE asambodo.