OUR REPUTATION Chongda Group established in 2008, the leading machinery manufacturer and foreign trading enterprise from China, is headquartered in Zhengzhou, the capital city of Henan province in the middle region of China. Chongda is the integrity of scientific research and development (RD), manufacturing, technical service and oversea trading of high quality Mine drilling equipment. Notably, supported by their rigidly trained engineering group, talented designers, professional oversea trading salesman team, and quality products of prolonged service life, and heart-warming services, Chongda ...