Yantai DNG Heavy Industry Co., Ltd. (Abbreviated as DNG) is located in Yantai City, which is known as production base of China Hydraulic breakers. DNG has strong technical strength and rich production experience, which specialize in producing various of hydraulic hammers and spare parts, such as chisels, pistons, front and back head, chisel bush, front bush, rod pin, bolts, and other supporting products. ඩීඑන්ජීව ඉතිහාසයේ වසර 10 කට වඩා වැඩි ඉතිහාසයක් ඇති අතර කර්මාන්තශාලා සමත් වීම ISO9001, ISO14001 සහතික කිරීම සහ යුරෝපා සංගම් සීඊ සහතික කිරීම.