one manufacturer which occupies 60 percent of diamond bits market share in China. Our products including Diamond bits and reaming shells,Casing shoes,Casing bits, the thin-wall diamond core bits, and other diamond tools and material.
We offer high quality products, very competitive price and punctual delivery, which will reduce your productivity costs at the large extent. The most precious treasure of our company are rich experienced technical teams, and motivated sales and service teams. The slogan of our company is "Your requirement is our motivation and your satisfactory is our honor."

You are welcome to visit our website to explore more.  
We will appreciate that you can offer the other customer informations if you are not the buyer.
Looking forward to your reply

Thanks & Best regards

Your sincerely
John Wang