Zhengzhou LD Diamond Products CO., LTD is a high tech enterprise that specializes in the research, manufacture and marketing of diamond and CBN products,has taken the lead in mining drilling,metal cutting and grinding processes 3 big fields.Our products are widely used for mining drilling,oil and gas drilling,aviation and aerospace,automobile,ceramic,magnetic disc,etc. and other metal and nonmetal materials cutting and grinding. We have a professional technical team with many years of experience in diamond and its application field,established excellent research cooperation with many colleges. We have the first-class manufacturing technology, introduced advanced production equipment and testing apparatus, established perfect research and development, quality control system. We have awarded ISO9001:2000 quality management system certification, owns independent import and export rights. Our products sold well in our domestic market, also have been exported to West Europe, Russia, Cana