Henan Yalong Diamond Tools Co.,Ltd
In early 1990's, R&D diamond micro-powder products;
From 2001-Production of PDC (polycrystalline diamond compact) and PCBN (polycrstalline cubic nitride boron);
By now---covering an area over 100,000 sq meters; with a monthly capacity over 250,000 pieces; serving industries of oil/gas drilling, mining, exploring, precision (metal)working etc.