1. Grade: Cu/Zn 2.Model Number:0.25mm, 0.30mm 3. Alloy Or Not:Is Alloy 4. Place of Origin:henan,China 5. Certification: Passed ISO9001:2008 quality certificate Passed ISO/TS16949:2009 certificate Passed GJB9001A-2001 military quality certificate. 6.Brand Name:Bashan