Yantai DNG Heavy Industry Co., Ltd. (An rage shi a matsayin DNG) yana cikin garin Yantai, wanda aka sani da tushen samar da na'urorin lantarki na kasar Sin. DNG yana da ƙarfin fasaha mai ƙarfi da ƙwarewar samarwa mai wadata, wanda ya ƙware wajen samar da guduma daban-daban na hydraulic da kayan gyara, irin su chisels, pistons, kan gaba da baya, bush chisel, daji na gaba, fil ɗin sanda, kusoshi, da sauran samfuran tallafi. DNG yana da tarihi fiye da shekaru 10, kuma ma'aikata sun wuce ISO9001, ISO14001 takaddun shaida da takaddun shaida na EU CE.