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Plot No. 34, I. D. A., Phase 1, HCL Post, Cherlapally, IDA, CHERLAPALLY PHASE-I, Hyderabad 500051, Andhra Pradesh. +(91)-(40)-27260393, fax: +(91)-(40)-27260293. DTH HAMMERS, DTH BUTTON BITS, FOR MINING,EARTH DRILLING,BOREWELL,ETC.