Hejian Yinhai Rock Bits Manufacture Co.,Ltd established at 2008 is located in Hejian City,Hebei Province,China. We are manufacturer of tricone bits,milled tooth drill bits,PDC bits,Piling foundation single cones/ rock reamers.Our bits based on high-tech skills and designs are used in exploitation of natural gas,crude oil, water well, geological exploration,HDD drilling and piling foundation. We have technical research team,production management marketing team and professional sales team in our company to serve our customers all over worldwide. Both standardized tricone bits/PDC drill bits produced strictly according to API standard and rock bits-customizing used in various construction works are provided. Good quality is our main aim we stick to, ever and forever. HEJIAN YINHAI ROCK BITS IS 100% real factory of tricone bits pdc bits and single roller cones.YH bits work well and hot sales in USA and Europe these years.  FAQ: 1.Q:What kind of packing do you have? A: Wooden case free of fumigation; Cartons; Packing can be customized. 2.Q:What is your price advantage?   A:We are 100% factory directly sales,API production process guarantee,Provide OEM services for you.     Reduce the cost of drilling for you, worry free after-sales service.Welcome to book a video-call to inspect YINHAI factory.