user center
Vickers hardness for metallic materials（HV0.2）
China NIL Research Center for Proficiency Testing
Address: #13, Gaoliangqiao Xiejie, Haidian District, Beijing
Contacts: Ms. CHEN Jinghua, Ms. YAN Dongxia
Tel: +86 10 6218 1064
E-mail: nil@analysis.org.cn
Website: http://www.nilpt.com
