Dear Sir or Madam, Changsha Changtan Machinery Co., Ltd is one professional manufacturer and leading exporters of Premium-quality drilling rigs and drilling tools in China. All sites are ISO9001 Quality Certified. Due to the excellent quality, competitive price, superior service, our products have been exported to many countries and won a very good reputation from all of our customers. We are quite sure that our products will meet the requirement of yours. Please find our products line as follows: 1. Drilling Rigs for hole depth from 30m to 1600m; 2. Various mud pumps; 3. Diamond core drilling tools including diamond core bits (NQ, BQ, HQ, PQ, TT,T2,T6,etc), reaming shells/reamer, core barrel, overshot, casing shoe and drill rods in DCDMA standard, CDDA standard, and Boart Longyear Standard; 4. DTH hammers, similar or equal DHD, COP and SD series hammers; 5. DTH bits, similar or equal DHD, COP and SD series bits; 6. Threaded bits & tapered bits, diameter from 33mm to 127mm; You may understand from our website (www.changtandrill.com ), and if you need some more information, please feel free to contact us. We are very interested in cooperating with your company to develop and to promote our products in your country. Looking forward to hearing from you soon. Sincerely yours, Alice Changsha Changtan Machinery Co., Ltd. http://www.changtandrill.com E-mail: impexp@changtandrill.com MSN: ctdrilling@hotmail.com Yahoo: ctdrilling@yahoo.com.cn GMAIL: ctdrilling@gmail.com Tel +86 (0)731 83580878 Fax +86 (0)731 83580858