Great Wall Diamond Drill (Hong Kong) Co., LTD is a famous modern high-tech enterprise, which specializing in manufacturing and exporting rock drill equipment and pneumatic tool. The company was founded in 2005, and located in the center of China industrial–ChangSha. Our company has the full sets of producing rock drilling machine and pneumatic tool , by using high quality raw material, utilizing advanced craft technology and imposing strict quality inspection,independently research and develop the most advanced high air pressure DTH hammer in China, various kinds of DTH bits, accentric overburden drilling equipment,various kinds of threaded drilling bits, reverse circulation hammers and bits , shank adapters and coupling sleeves, drill tube, and accessories of rock drilling and other products. The products are being well sold in China and exported to United States, Australia, Canada,Pakistan, Brazil,South Africa, South Korea and other countries.