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. DNG has history more than 10 years , and factory pass the ISO9001, ISO14001 certification and EU CE certification.