Zhangjiagang Free Zone Yongda Machinery Co., Ltd. Main Products: Rotary Head , Earth Drill , Drill Rig , Drifter , Hydraulic Drifter City/Province: Suzhou, china Zhangjiagang Freezone Yongda Machinery Co, . Ltd with a state-of-the-art production facility located in Zhangjiagang Freezone, Suzhou city. We're specializes in the design, production and distribution of hydraulic demolition and drilling equipment to meet the growing demand of cost effective equipment in civil engineering, mining, and quarry industry. What we do YONDA offers wide range of top performance products & value added service includes; A. Drill heads, such as hydraulic drifter, rotary head, percussive rotary head. B. Excavator attachments, such as rock breakers, earth drill, vibro ripper, excavator rockdrill. C. Drill rigs, such as mini soil investigation drill rig, portable anchor drill, top hammer surface rock drill, jumbo drill & so on. D. Custom design & manufacturing service. Our products, profes...