Quality the First         Sincerity & Trust     Customer the King     Innovation a Must    

         Chengdu Huilingfeng Special Construction Co. Ltd (hereafter abbreviated as HLF) was established in 2001. She is a private enterprise integrated with engineering, manufacturing, operation and marketing. The core business of HLF is the development and manufacturing of PDC bits used in oil and gas fields.
　　 HLF has a strong technical force who masters the world advanced technology of manufacturing PDC diamond bits. HLF now has a complete PDC bit manufacturing line with various specialized equipment. Based on the geological conditions of different oilfields and different customers requirements, HLF manufactures various types of PDC drill bits, sizes from 4" to 12-1/4", and diamond core bits that are widely used in domestic oil and gas fields.
　　 HLF has obtained the certificate for the ISO9001: 2000 certification in 2004 and the API certificate for the authority to use the API monogram in 2006 which benefits
　　 HLF products getting into the international markets. The aim of HLF is to provide customers with PDC bits of excellent quality, competitive prices and timely delivery. We would like to make friends with all our customers under the principle of mutual benefit, trust and sincerity, so as to gain mutual development.