Fujian Riss Drilling Co., Ltd. is a legend in commercial production. It was founded by an enthusiastic engineer who devoted his energy and time to improving quality day by day. It has a larger production plant with an area of ​​20, 000 square meters and is a large company in Zhongshan with more than 300 employees and a daily production quantity of 1000 units of finished products. Our products include: China Bit Drill Pdc, Cone Bit, Pdc Matrix Bit, Roller Cone Drill Bit, Diamond Drill Bit, Diamond Bit, Pdc Diamond Bit, Tungsten Drill Bit, Diamond Core Bits For Granite, Bit Pdc