we are the largest and professional manufacturer of metalworking tools and diamond tools in china, we have been in this fields for more than 20years. we have our own r&d center. our products including: diamond metalworking tools,pcd/pcbn blanks,pcd&pcbn cutting tools/insert,turning tools,endmills,coated cutting tools and so on. we have export our products to usa, japan, european countrys. you could view our website: www.hhxf.com for more information. also,for the metalworking tools,we could grinding it on our ewag machine,that could achieve very good precision.welcome you test our quality.